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If anyone ever referred to the "true" velocity of an object, he mis-spoke.

All we can directly measure from the earth is an object's velocity relative to the

earth. And when we have measured the velocities of several objects relative to

the earth, then we can calculate the velocity of one relative to any of the others.

But it's quite correct to observe that there's no such thing as the "true" or "real"

velocity of anything, without reference to something else.

Except for electromagnetic radiation, including light. That speed is always the same

for all observers, no matter who you are, or how you're moving relative to anything

else.

If I'm moving north at 0.3c, and you're moving south at 0.5c, and Mr. Tompkins

is moving west at 0.9c ... all relative to Dallas Texas ... and somebody in Seattle

shines spotlights at all three of us, then each of us measures the light passing

him at the same speed . . . 'c'. Each of us measures the same number.

Makes no sense at all. But it's true.

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IS velocity possible in zero gravity?

Velocity is relative to the observer and or objects that are in the area , if your sitting in true zero gravity from your point of view you will be standing still but in-reality your velocity will based on your original thrust. Some one watching you (at a zero velocity) from another location might see you zoom by at the original velocity. So the new question is if that other person has zero velocity and is in zero gravity what time will it be when they look at their watch ? Hmmm


What is the equation for velocity approaching that the speed of light?

The equation for velocity approaching the speed of light is given by the relativistic velocity addition formula: v = (u + v') / (1 + u*v'/c^2), where v is the relative velocity between two objects, u is the velocity of the first object, v' is the velocity of the second object, and c is the speed of light in a vacuum.


How might the objects found in the early universe differ from the objects found in the universe now?

In the early universe there was only Hydrogen and Helium (and a smidgen of Lithium).


Does gravity affect all or only some of the objects in the universe?

Gravity affects all objects in the universe. It is a fundamental force that pulls objects with mass toward each other. The strength of gravity depends on the mass of the objects and the distance between them.


Can relative age dating be used to determine the age of the universe?

Simple Answer:Relative age dating is usually in the domain of geology, archeology and paleontology. Relative age dating alone does not give the age of an object or the date of an even, just the relative ordering in time.More:The principles of relative age dating can, however, be applied to cosmology. The basic principle is that one uses characteristics of objects to identify whether one object is is older than another, and then arranging them in chronological order.Alone, relative age dating can not be used to determine the age of the universe or anything else, but with some knowledge of absolute age one can arrive at statements like, event B must have come after event A and event A is a known date, so event B must be at an earlier date.For instance, the universe must be older than the Earth. The Earth can be dated to about 4.5 billion years in age, therefore the Universe must be older than 4.5 billion Years. If, one adds to that the one knows that the light from a distant galaxy takes a 10 billion years to reach Earth, then the galaxy, and hence the Universe must be more than 10 billion years old.

Related Questions

How can one determine the relative velocity between two objects?

To determine the relative velocity between two objects, you can subtract the velocity of one object from the velocity of the other object. This will give you the relative velocity between the two objects.


How do you measure an objects speed and direction?

Velocity


Why is relative velocity AFTER equal to Vf2 minus Vf1 but relative velocity BEFORE equal to V1 minus V2 in the coefficient of restitution formula?

relative velocity is defined as the time rate of change of one object with respect to another object.the relative velocity depends upon the observer i.e.if the velocities of two objects are same then the relative velocity also seems to be equal.


What happens when you move magnets?

Their position relative to other objects in the universe changes.


What is the combining of velocities known as?

The combining of velocities is known as velocity addition or relative velocity. It involves adding or subtracting the velocities of two objects moving relative to each other.


What is the definition of absolute velocity?

Absolute velocity is the velocity of an object with respect to a fixed point in space, regardless of the motion of other objects. It provides a consistent measure of an object's speed and direction in relation to a stationary frame of reference.


The measure of an objects speed and direction is the objects?

The measure of an object's speed and direction is the object's velocity. Velocity is a vector quantity that includes both the speed (magnitude) and the direction of motion of an object.


Velocity is a measure of an objects what two things?

Velocity is a measure of an object's speed and direction of motion. It describes how fast an object is moving and in which direction it is moving.


Is a measure of an objects velocity the same as the measure of the objects inertia?

No.Consider a grain of rice and a banana. If you threw these at someone so that they were moving at the same speed, their velocities would be the same.However, you would hardly feel the impact of the grain of rice but the banana would hurt.The force of the impact is a measure of the relative inertia of the two objects.Where two objects are traveling at the samevelocity, the inertia is greater in that object that has the greatest mass.


Velocity addition is used when motion involves?

Velocity addition is used when dealing with two objects moving at different velocities relative to each other. It helps calculate the combined velocity of the objects when seen from a different reference frame.


How does frame of reference measure motion?

A frame of reference provides a perspective from which to observe and measure motion. By establishing a fixed point or system of coordinates, it allows for the comparison of an object's position and velocity relative to that frame. This helps to quantify and analyze the movement of objects in a specific context.


What do motionless objects have in common with objects that are moving in a straight line with speed?

Motionless objects and objects moving in a straight line with constant speed both have a constant velocity of zero or a constant velocity in a single direction, respectively. They share the characteristic of having a consistent position relative to a reference point over time.