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No. A body with constant velocity is either stationary or going at constant speed in a constant direction. The usual interpretation of speed and velocity goes like this.

A velocity is a vector with magnitude and direction. The magnitude is usually called its speed. Changing a speed must change the length of the vector and changing the length of the velocity vector has to change the velocity.

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Q: Can speed of a body change if its velocity is constant?

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No. The definition of acceleration is a change in velocity, i.e. speed and/or direction. So constant velocity means zero acceleration.

No, in order for the velocity to be constant, the speed has to be constant. Speed is a scalar, meaning that it is just a number. (A car goes 50 miles per hour). Velocity is a vector, which indicates that it needs a measure of its displacement and a direction. (A car is going 50 mph to the east). A body can have a constant speed but a changing velocity because the direction can change while the speed is constant. (A car goes 50 mph around a roundabout). However, a body can not have a constant velocity with a changing speed. A car can not be slowing down yet still be going the same speed and direction.

def " the rate of change of velocity is called acceleration" example. when we are driving ...after some time turn to enter in another street.. with the same speed....but the body have acceleration because there is change in velocity...as the velocity is vector quantity it depends on the magnitude as wall as direction...while on turning there is change in velocity so there is an acceleration is the body with constant speed.............

Acceleration is a change in velocity over time. Velocity has both speed and direction. A body moving in circular motion at constant speed is still accelerating because its direction is constantly changing. If either speed or direction changes, or if both change, the body is accelerating.

No. The linear velocity can never be equal when speed is constant. This is because direction is changing and therefore linear velocity changes.

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No. Velocity is speed and direction. If you change either variable, the velocity will no longer be constant.

No. If the speed varies, the body accelerates, and velocity cannot be constant.

No. "Velocity" means the speed and direction of motion. If either of them is changing, then velocity isn't constant. (By the way, that's what "acceleration" means: Any change in velocity.)

No. The definition of acceleration is a change in velocity, i.e. speed and/or direction. So constant velocity means zero acceleration.

No, not at all possible. But constant speed with changing velocity is possible.

No, because constant velocity means constant speed and constant direction

Yes. Velocity is rate (or speed) in a given direction. If you change your direction but not your rate (or speed) then you have changed your velocity without changing speed.

Yes, velocity involves speed and direction. So if the direction and the speed change at a certain rate, the velocity could stay the same.

Of course. In fact, in order to have constant velocity, it must have constant speed.What you really want to know: Can a body have changing velocity when it has constant speed ?The answer to that one is also "yes", for example when it is moving in a circle, the speed is constant but the velocity is changing all the time (in direction).

No, in order for the velocity to be constant, the speed has to be constant. Speed is a scalar, meaning that it is just a number. (A car goes 50 miles per hour). Velocity is a vector, which indicates that it needs a measure of its displacement and a direction. (A car is going 50 mph to the east). A body can have a constant speed but a changing velocity because the direction can change while the speed is constant. (A car goes 50 mph around a roundabout). However, a body can not have a constant velocity with a changing speed. A car can not be slowing down yet still be going the same speed and direction.

Yes.

no.

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