Acceleration
15. Distinguish between velocity and acceleration.
Velocity-the speed and the direction of motion
Acceleration-the rate of change in velocity

16.What is the acceleration of a car that increases its velocity from 0 to 100 km/h in 10 s?
10 km/h in 10 seconds



17.What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?
10 km/h in 1 seconds


18.When does one feel the effects of velocity in a moving vehicle when it is moving uniformly or when motion changes?
when moving uniformly

19. 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?
when there is no change of velocity.