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Does a rocket always need the escape of 11.2 to escape the earth?
That's the initial speed the rocket would need to escape Earth, assuming it starts close to Earth, and no additional impulse is provided later. With a gradual impulse - for example an ion impulse - i.e., providing impulse over time, it isn't necessary to start with this speed. However, the rocket still needs the same total amount of energy to escape from Earth.
Do all balls at the same speed?
yes they have the same speed
Is internet speed decrease when bandwidth increase?
Bandwidth is the same as "speed". "Speed" is the popular name, it is not a very precise term.Bandwidth is the same as "speed". "Speed" is the popular name, it is not a very precise term.Bandwidth is the same as "speed". "Speed" is the popular name, it is not a very precise term.Bandwidth is the same as "speed". "Speed" is the popular name, it is not a very precise term.
Is 2 vehicles having different speed but same distance have same velocities?
No. Same velocity means same speed and same direction.
Which colours have the fastest speed?
Every color has the same speed. That speed is also the same as the speed of heat, radio, TV, microwaves, and X-rays.
What is the function of a parachute on a rocket?
Same as it is on a human, decelerate the descent speed such that the rocket can be used again.
What is the functions of a parachute on a bottle rocket?
Same as it is on a human, decelerate the descent speed such that the rocket can be used again.
How are constant speed and average speed different?
Ans:Imagine you ride a cycle to your mates house. You have with you a cycle speed computer that measures your speed through out your journey. You can imagine that your speed is likely to keep changing throughout your journey: you might have to stop for traffic lights (then your speed would be zero at that moment), and then you might come to a steep hill, where you go very fast. You can see that over the course of the journey your speed has changed a lot!Now, if you wanted to know how quickly you got there, you could simply look at your timer, and the distance you travelled divided by your total time is the average speed!If you had a constant speed this would be where you cycle there at the same speed all the way there. Is this a realistic thing to happen in the real world? Remember the traffic lights you had to stop for?So we use average speed instead.However, if you broke your journey up into segments, like the hill bit, and the traffic light bit, then you might be able to say at that instant in time, you had a constant speed.
Is a space shuttle faster than a conventional rocket?
That' depends on the mission. A rocket and a space shuttle have to be in orbit and so have to fly at 8 km/s. But in certain cases, the rocket has to leave the earth (apollo, planet probe...), and then these rocket have to fly at 11 km/s. So usually the speed are the same, but sometimes, rocket are faster...
If a rocket in space burns fuel consumes energy at a constant rate its velocity should increase at a constant rate ignoring the loss of mass so why is kinetic energy a function of V SQUARED?
Assuming constant acceleration, at a higher speed, the force must be applied over a larger distance to get the same change in speed. Since work = force x distance, it requires more work to get the same change in speed, once the rocket has a higher speed.In the case of the rocket, the situation is not as simple as you put it. For example, all the fuel the rocket required to change the rocket's speed, say, from 1000 m/s to 1100 m/s, must be accelerated first, using more fuel at first. Also, the exhaust gases from the rocket have kinetic energy, which depend on the rocket's current speed - when it is just starting, the exhaust gases have a higher speed, and therefore more kinetic energy. To see whether energy is conserved or not, this kinetic energy would have to be included in your calculations.
If a rocket in space burns fuel consumes energy at a constant rate it's velocity should increase at a constant rate ignoring the loss of mass so why is kinetic energy a function of V SQUARED?
Assuming constant acceleration, at a higher speed, the force must be applied over a larger distance to get the same change in speed. Since work = force x distance, it requires more work to get the same change in speed, once the rocket has a higher speed.In the case of the rocket, the situation is not as simple as you put it. For example, all the fuel the rocket required to change the rocket's speed, say, from 1000 m/s to 1100 m/s, must be accelerated first, using more fuel at first. Also, the exhaust gases from the rocket have kinetic energy, which depend on the rocket's current speed - when it is just starting, the exhaust gases have a higher speed, and therefore more kinetic energy. To see whether energy is conserved or not, this kinetic energy would have to be included in your calculations.
Does velocity affect the speed of light?
The speed of light is always the same, as long as the light stays in vacuum or in the material substance it's in. The speed of the source generating the light, or the speed of the person who's measuring the light, has no effect on the light's speed. It will always measure the same number. That means: -- If a rocket is in space, flying toward you at half the speed of light, and the astronaut aboard shines a flashlight at you, and -- If you strap a jet-pack on your back and fly toward the rocket at half the speed of light, and -- If you measure the speed of the light from his flashlight as it shines past you, -- You'll measure the same speed of light as if you and the astronaut were both standing still. It can't be . . . But it is. It's been confirmed in thousands of experiments during the past 100 years.
How are jet engines and rocket engines the same?
They both contain the same things that both jet and rockets need.They need fire to push it up and horsepower to keep up on speed.
Does a rocket always need the escape of 11.2 to escape the earth?
That's the initial speed the rocket would need to escape Earth, assuming it starts close to Earth, and no additional impulse is provided later. With a gradual impulse - for example an ion impulse - i.e., providing impulse over time, it isn't necessary to start with this speed. However, the rocket still needs the same total amount of energy to escape from Earth.
How to figure out miles per hour?
Average speed = distance travelled / time taken > 125 mile journey takes 1.5 hours, then 125 / 1.5 = 83.33 mph average speed for the journey. GPS speedos appear to give instant speed reading, but use the same equation except over a very short distance (say 10 metres)
Why the skier moves but Earth does not seem to?
It is because the skier (when stationary) is moving at the same speed as the Earth's rotation. The same effect is felt by passengers on a bus. When the bus suddenly starts off, the passengers are thrust back into their seats. When the bus suddenly stops, the passengers are thrust forwards in their seats. But, for most of the journey, when the bus is travelling at a steady speed, the passengers can relax in their seats and enjoy the journey.
How is a rocket the same as a plane?
They Fly.
