# How much energy would be needed to accelerate a large spaceship to half the speed of light is?

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At lower speeds, the kinetic energy is 1/2 mv2 (1/2 times mass times speed squared), but since we are approaching the speed of light, the more accurate formula is (note: I am using root() to indicate the square root):

mc2(1 / root(1 - (v/c)2) - 1), which in this case is (mass in kilograms) x (300,000,000 m/s)2 x (1 / (root(1 - 1/4)) - 1) = mass x 9x1016 x (1 / (root(3/4)) - 1) = mass x 9x1016 x (1 / 0.866 - 1) = mass x 9x1016 x (1.155 - 1) = mass x 9x1016 x 0.155 = 1.395 x 1016 (Joule for every kilogram).

Note 1: This is the kinetic energy content of the spaceship, and the minimum amount of energy required to accelerate it to that speed; if any energy is wasted, the total needed would of course be more.

Note 2: The standard (non-relativistic) formula is 1/2 x mass times (150,000,000 m/s)2 = 1.125 x 1016. This is somewhat lower than if you use the correct relativistic formula. The more you approach the speed of light, the larger will be the discrepancy between the relativistic formula and the classic formula. At less than 1% of the speed of light or so, the discrepancy is so small that it isn't worthwhile to use the more accurate (and more complicated) relativistic formula.
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# If something has low mass would it take less energy to get it to light speed?

As much as we've tried, no one's yet found a loophole in the equations. Regardless of its rest mass, pushing a chunk of matter to the speed of light would result in its acquiring infinite mass, and thus requiring an infinite amount of energy to put it "over the top." Einstein may not have said it ( Full Answer )

# What voltage is needed to accelerate electrons to 1.5 times the speed of light in a CRT?

It is not possible to accelerate electrons--or anything else--to the speed of light, much less to 1.5 times the speed of light. . Nominal operating voltages for a CRT range from a couple of thousand volts to a few tens of thousands of volts, depending on the application.

# How much money would it cost to travel at lightspeed in a spaceship?

Well let's assume that it is possible to travel at lightspeed and that an engine had been designed that could reach such speeds (for now lets assume a matter-antimatter engine) there are alot of logistics involved in this endeavour for example right now fermi-labs can produce 70,000 anti-protons per ( Full Answer )

# How long would it take to get to the moon at these speeds a bike at 10kmhr a car at 100 kmhr a spaceship at 20000 kmhr and at the speed of light going 300000 kmsecond?

given that the average distance distance from the Earth to the Moon is 382,500 KM a Bike @ 10km per hour would take 4.3 Years a Car @ 100km per hour would take 159.38 days a ship @ 20,000km per hour would take 19.13 hours @ the speed of light would take 1.28 seconds THIS IS ALL W ( Full Answer )

# Speed of spaceship?

Space shuttles can travel at extremely fast speeds. Typically,space shuttles orbit the Earth at slightly less than 20,000 milesper hour.

# In order to send a spaceship to explore outside your soloar system at what speed would the spaceship need to be projected from earth?

42,1 km/s. If we use Earth circulation the values are following: 1. Start from Earth surface: 16,7 km/s 2. Start from Earth orbita: 13,8 km/s Hope this helps.

# How much energy would it take for an electron to move at the speed of light?

Simply put, it would in theory require infinite energy. This is obviously not possible, at least not by our current understanding of physics. Therefore, once again in theory, nothing of ANY mass could be accelerated to the speed of light.

# How much would it be to get a spaceship on Saturn?

Since Saturn is a gas planet, you wouldn't ever "get a spaceship on Saturn" - either near it or in it. It would be a lot of effort and money - Saturn is the 6th planet, Mars the 3rd, so it'll be quite a bit farther to reach it. Mars is 193 million miles from the Sun, Saturn is 888 million miles from ( Full Answer )

# If you were travelling at the speed of light and turned on a torch in your spaceship would you see a beam of light from the torch?

You can't travel at the speed of light. Accelerating a finite mass to lightspeed requires an infinite amount of energy. If you were traveling at nearly the speed of light, relativity says the beam of light from the torch would appear to you to be traveling just as fast as it would if you were sta ( Full Answer )

# How long would it take to accelerate to the speed of light?

Forever . The time taken would be infinite . As any body with mass approaches the speed of light, it takes more and more force to accelerate it to c. You can never reach the exact speed of light.

# About how long would a spaceship traveling at half the speed of light take to get to alpha centauri?

First of all, a spacecraft would not travel a straight line; so the time required for the trip would have to be longer than the time required to simply travel the straight distance. But ignoring that little complication, the distance to the Alpha Centauri system is listed as 4.4 light years, meanin ( Full Answer )

# If a body were accelerating at a rate making its mass equal to its normal mass on earth how long would it need to travel before reaching light speed?

It would take infinitely long in both time and space, and require and infinite amount of energy to accelerate any object with mass to the speed of light. In other words, it is impossible to reach the speed of light. Einstein's equations show that as an object approaches the speed of light, it's kine ( Full Answer )

# How can you accelerate to the speed of light?

No mass can be accelerated to the speed of light. Einstein showed this in his earliest papers, and we have not thought our way around restrictions that he showed were in place in nature.

# What would happen if you were traveling in a spaceship at just under speed of light and you turned your headlights on?

Simple. You would see a ray of light moving away from you at a speed that would equal the speed of light minus your speed. Not simple. If you know anything about anything, you know that someone asking this question does so because of an apparent paradox: Modern theory asserts that the speed of li ( Full Answer )

# What is the speed of the spaceship?

It varies greatly. It will depend on how far away it is from the object it's orbiting. If it is in a circular orbit around the Earth, its speed can be calculated by the formula: speed = Squareroot(398600/(6371+altitude)) This will give you an answer in kilometers per second.

# What happens to mass when a spaceship appraoches the speed of light?

If speed approaches the speed of light, the mass of any object will increase. This is not just theory; it is observed on a daily basis. Not with spaceships, of course; the technology is not ready yet - but with subatomic particles in accelerators.

# How large would the lattice energy need to be for the formation of NaCl2 to be exothermic?

The lattice energy would need to be 4711 kJ for the formation of NaCl2 to be exothermic.

# What speed does a spaceship need to travel outer space?

I think this is a question about Escape Velocity.The Escape Velocity for the Earth at the Earth's surface is 11.2km/s (around 2,200mph). That is the speed you would have to launch an object if you wanted it to leave the Earth permanently without any further thrust. If you haven't noticed 11.2km/s is ( Full Answer )

# Can you get a spaceship to go 80-90 percent the speed of light?

There are no theoretical boundaries, except the terrible amount of energy that is required. The Kinetic energy (T) of a spaceship is T=(1/sqrt(1-v^2/c^2)-1)m*c^2 To give you an idea of numbers, taking a 1 ton spaceship traveling at 80% the speed of light, this yields a kinetic energy of abo ( Full Answer )

# How much kinetic energy would a particle have if it could move at the speed of light?

Anything that has mass when it's moving slower than light hasinfinite mass when its moving at the speed of light, so its kinetic energy would beinfinite. That's a big part of the reason why no thing can be made to move at the speed oflight ... all of that infinite kinetic energy would have to come f ( Full Answer )

# How much time you need for 15km with the speed of light?

About 0.00005seconds in air. The spee of light in air is nearly 300000km/s. So, time required will be 15/300000\nseconds which is 0.00005.

# Why do scifi spaceships always have a maximum speed of x percent for example 50 percent or 30 percent of the speed of light what stops them from accelerating to 99 percent without air resistance?

Even at modest %'s of the speed of light objects start to radiate their energy away in Gravitational Waves. So it is very expensive to approach the speed of light when most of your effort is just radiated away.

# If a spaceship 100 m long when at rest on the earth were to travel at nine-tenths the speed of light its length as measured by an observer on the earth would be what?

First of all, its nose has to point in the direction of motion, or you don't get the answer you're fishing for. The contraction only occurs in the direction of motion. If the length of the ship is 100 meters in the reference frame in which it's at rest, and it then departs at 90% of the speed ( Full Answer )

# If you traveled to Proxima Centauri at half the speed of light how much time would it take to get there and how long would it seem to the astronauts?

If we put an astronaut into a spacecraft that leaves the earth at 1/2 the speed of light and continues at that speed, then he would cover the 4.4 light years distance to Proxima Centauri when our calendar reads 8.8 years later. Inside the spacecraft, at 0.5 the speed of light, it would seem l ( Full Answer )

# What is the speed of light energy?

the speed of light is 300,000 kilometers per second. and if you ask about how far the sun is from earth that would be 150,000,000 kilometers so in calculation that would mean it would take just about 8 minutes and 17 seconds for the suns light and heat to travel to the earth. now imagine the earth w ( Full Answer )

# Energy that travels at speed of light?

That can be light, or some other electromagnetic wave (light is anelectromagnetic wave), or gravitational waves.

# How much energy is needed to travel at the speed of light?

It is not possible for any object with any mass to travel at the speed of light. It is possible to travel at 99.9999999999999999999999999999999999999% the speed of light, you could even travel at "99.9 followed by a trillion trillion 9s"% of the speed of light but never quite 100%. According to our ( Full Answer )

# What is the relation of speed of light with energy?

E=mc 2 Einstein's formula tells us the amount of energy a mass would be equivalent to, if it were all suddenly turned into energy. It says that to find the energy, you multiply the mass by the square of the speed of light, this number being about 300,000,000 meters per second.

# Hypothetically How long would it take to accelerate to light speed at 1g?

No matter how long you accelerate at 1g, you will never quite reach the speed of light, only approach it. A simple calculation that does NOT take into account the Theory of Relativity is 300,000,000 m/s divided by 10 m/s 2 = 30 million seconds, which is about a year. But when you start approaching ( Full Answer )

# Is it possible to travel half the speed of light?

Yes it absolutely is, however, this is not for humans. At particle accelerators, like the Large Hadron Collider in Geneva, Switzerland, physics are able to send particles 99.99999% the speed of light. The particles are only 3 meters per second slower than light itself. In turn, physics are able to s ( Full Answer )

# What energy moves at the speed of light?

Light is just something within the Electro-magnetic spectrum. Many other things move at the speed of light etc. Gamma Rays and Microwaves. Only a section of it is visible being light. These all fall under Electro-magnetic radiation. Therefore light in a type of electro-magnetic radiation.

# How much energy is produced when you push a box with a mass of 10kg at the speed of light?

A moving box doesn't produce energy. If you want to move the box,then YOU have to produce whatever energy it requires. Normally, you takeenergy out of food, and run it through your muscles to move things. That's only one of the myths, misunderstandings, and unscientificcontortions packed into your ( Full Answer )

# How much would an object age if it traveled 1 year at half the speed of light?

by our standards; 1 year (the logical answer).... by the objects standards; ask a mathematician who knows the formula

# How can a small particle say a neutrino travel ALMOST at the speed of light when it would take an infinite amount of energy to travel at the speed of light?

Firstly, it takes an infinite amount of energy to accelerate an object with 'mass' to the speed of light. A massless particle removes that energy problem. Secondly, approaching the speed of light is not actually much of an issue for even a particle with mass. The Large Hadron Collider accelerates ( Full Answer )

# What type of engine and what number of them would you need to reach the speed of light?

As far as we understand physics today, we won't ever be able to get to the speed of light. The faster you go, the harder it gets to go any faster. So that last little fraction will "always" remain impossible - or at least until someone invents a whole new branch of physics.

# How long would it take for a Ferrari accelerating 0-60 in 4.2 seconds to reach the speed of light?

It is technically impossible to accelerate to the speed of light.That would require an infinite amount of energy. However, based on a simple,linear equation: Going from 0-60 mph in 4.2 seconds is an averageacceleration of about 6.38 m / s 2 . The speed oflight is 299,792,458 m / s . This gives us ( Full Answer )

# How much energy would be required to accelerate a 1kg of mass up to the speed of light?

Concerning Albert Einstein's special theory of relativity, no mass can be accelerated to the speed with light: this would acquire an infinitely amount of energy. For the special interested: the European Organisation for Nuclear Research (CERN), recently registered particles (Neutrinos) traveli ( Full Answer )

# What chemical would a man need in him to move at the speed of light because I found out that there are some that can do that.?

It isn't possible for a man to move at the speed of light. You may have seen something on television, and confused facts with fantasy.

# How long would it take to reach the star Vega if a spaceship could travel at one-tenth the speed of light?

Vega is relatively close at 25 light years. At one tenth of the speed of light, it would still take 250 years to reach it from our solar system.

# How long would it take for a spaceship to get to Ganymede if it was going the speed of light?

Ganymede, a moon of Jupiter, is orbits the planet at a distance of 1.070x10 6 km. Jupiter's distance from Earth ranges from 588.5x10 6 km to 968.1x10 6 km, depending on it's location in it's orbit relative to Earth. Ganymede's distance from Earth, then, would range between 482.5x10 6 km and 1075 ( Full Answer )

# How much energy would be required to accelerate an object to the speed of light?

No amount of energy can accelerate a material object to the speed of light (at which energy can nevertheless travel). This is because an effect of increased velocity is an apparent increase in mass -- as the object approached the speed of light, its mass would approach infinite, so an infinite amoun ( Full Answer )

# Can humans travel at half the speed of light?

The speed wouldn't harm us, if we could reach it. But we have no way to get there yet. If you had a rocket or a car carrying enough fuel to keep accelerating you at 2G's, let's say ... night and day, 24 hours around the clock ... then if you could stand the load of dragging around double your ( Full Answer )

# How much energy you would produce if you were going the speed of light?

Since no object with mass can reach the speed of light -- such an object can only approach that speed -- the question is meaningless.

# What is one half the speed of light?

c / 2 = 149,896,229 meters (93,141.2 miles) per second, in vacuum. In material media, divide this number by the refractive index of the medium to find one half of the speed of light in that medium.

# What would be required for a spaceship to travel faster than the speed of light?

There is no known way to achieve this, as well as a great deal of consistent and convincing work in Physics over the past 100 years or so that says it's fundamentally impossible.

# Does the speed of light accelerate?

The speed of light does not accelerate as it is a constant speed. Protons which make up light however, do accelerate to achieve this speed as they rapidly travel through space.

# What happens if you step outside of a spaceship traveling at light speed?

Well first of all, you don't. No object that has any mass when it'ssitting still will ever travel at light speed. To answer your question in general: If you're sitting inside aspaceship, sipping a cup of coffee and surfing the web, and you decide to take a break fromyour back-breaking labor and ste ( Full Answer )

# Why can you not invent spaceship that travels near the speed of light?

There's no technical reason that you can't, but it's so impracticalthat there's no reason to go after it. Here are a few considerations: -- The time required to reach near-light-speed ... withacceleration that's low enough that it wouldn't kill life aboard or smash machineryaboard ... would exceed ( Full Answer )

# How much gas does a spaceship need?

That depends entirely on the engine. For instance, the primary delivery vehicle of the Apollo programwas the Saturn V:.. The Saturn V was comprised of three stages. thefirst stage carried roughly 4.75 million pounds of RP-1 and liquidoxygen. Stage two was fueled with 920,000 pounds of liquid hydrog ( Full Answer )

# How much time would pass at the speed of light?

It's really hard to talk about something that's moving AT the speed of light. So let's just talk about something that's moving at only 99.9999% of it ... that's actually done every day in particle accelerators. OK. You and a bunch of other people are standing around in a big field on a nice ( Full Answer )