Let’s get back to our golf game. We’ve hit the golf ball, and in 0.2 seconds the ball has changed from not moving at all to moving at 15 m/s. Let’s just plot out that much on a graph. A car slows down from 50.0 m/s to 20.0 m/s in 6.0 s. What is the acceleration? A driver starts his parked car and within 4.6 seconds, reaches a velocity of 15.0 m/s. What is his acceleration?

A driver starts his parked car and within 4.6 seconds, reaches a velocity of 15.0 m/s. What is his acceleration?

A sixth grader moves down the hall at 1.2 m/s. When he sees a bunch of eighth graders coming, he begins to run. After 3.2 s, he is moving at 3.6 m/s. What is his acceleration?