A car traveling at 7.0 m/s accelerates at the rate of 0.80 m/s? for 2.0 s. What is the final velocity of the car?

A ball is thrown straight upward from ground level with a speed of   22 m/s How much time passes before the ball strikes the ground if we disregard air resistance?     2.2 s     1.4 s     4.5 s     0.7 s

A speeder traveling at 2.86 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 1.23 m/s?. How long, in seconds, does it take the policeman to catch the speeder?

A baseball pitcher delivers a fast ball. During the throw, the speed of the ball increases from 0 to 30.0 m/s over a time of 0.100 seconds. The average acceleration of the baseball is m/s?.