Velocity
12. Distinguish between speed and velocity.
Speed-a measure of how fast something is moving.
Velocity-the speed and the direction of motion

13. If a car moves with a constant velocity,does it also move with a constant speed? Explain.
Yes. when something moves at a constant velocity or constant speed,then equal distances are covered in equal intervals of time.

14. If a car moves with a constant speed,can you say that it also moves with a constant velocity?Give an example to support your answer.
No,because velocity changes as its direction changes.Example is a car that rounds a curve at a constant speed but not of constant velocity.