Is it possible to have a changing velocity and a constant speed?

Answer 1

Yes, the velocity of a constantly (or not constantly) accelerated object will vary. Velocity is distance per unit time with a vector. It's speed (distance per unit of time) in a given direction. Under constant acceleration, the velocity is changing at a constant rate. But the velocity is changing. It is varying. The object could be speeding up or it could be slowing down. Or it could be changing direction. Any of these change velocity. An object that is experiencing constant acceleration will have its velocity varying. Why wouldn't it have?

Answer 2

it depends on what you mean. velocity is a vector-it has a value (i.e. 5m/s) and a direction on 2d space. so when it is constant, none of these change, neither the value nor the diercition.

however, the value of velocity may remain constant, while it's direction changes. in that case it is not correct to call the velocity constant, since the direction changes.

if an object moves around a cetre point in circulart motion without it's speed value changing (let's say it's 10m/s), velocity IS changing, since it's direction is changing. we know that the only means of this happening is through the appliance of a force. this particular force in this example has direction towards the centre, and it's value is (m*u^2)/r, where m is the mass, u the value of speed and r the radius of the orbit.

when we refer to vectors in fysics, especially newtonian, we generaly refer to their value, since the direction in most cases remains constant. you can see this is not always the case

Answer 3

Yes it is possible to have a changing velocity at a constant speed. Velocity is defined as the rate of change of position therefore if the direction of the constant speed changes then that constitutes a changing velocity. For example driving in a circle means that the speed is constant but the direction changes as you drive :)

Betlehem Semahge

Answer 4

Yes. Velocity includes the direction of the motion. If the direction changes, then that means
the velocity changes, even if the speed is constant.

Anything rotating at constant speed in a closed path has constantly-changing velocity.
Like a point on a phonograph record, a point on a hard disk drive, or an orbiting TV satellite.

Answer 5

Yes, certainly. You're fully entitled to it.

Velocity is speed and its direction. If the direction of the motion changes,

then the velocity has changed, even if the speed didn't.

A fine example is a marble or a roulette ball zipping around a circular path

at a constant speed. The speed is not changing, but because its direction

is constantly changing, so is its velocity.

Answer 6

No, velocity includes both speed and direction. If the velocity is changing, it means either the speed, the direction, or both are changing. Constant speed means the object is moving at the same rate without speeding up or slowing down.

Answer 7

I think a body in uniform circular motion can have a constant speed, but variable velocity. Since this body is in circular motion, it changes it's direction. Thus having a variable velocity.

Answer 8

Yes. A typical case is when an object moves at a constant speed in a circle.