If a car moves at a constant velocity, does it also move at a constant speed?

I

imsobored42242

New member
The answer is no because velocity is the direction, which may be constant, however the speed may not be. Right???

Also:
2) When are you most aware of motion in a moving vehicle-when it is moving steadily in a straight line or when it is accelerating? If a car moved with absolutely constant velocity(no bumps), would you be aware of motion?

3) Acceleration is generally defined as the time rate of change of velocity. When can it be defined as the time rate of change of speed?

Thanks
 
Velocity is a vector so it has both direction and magnitude. The magnitude in this case is the speed. So, if a car has constant velocity it also has constant speed.

2. You would not be aware of the motion because the velocity is not changing so the net force is equal to 0.

3. never. since velocity is a vector it cannot be used to measure change in speed.
 
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