A tennis player swings her 1000 g racket with a speed of 11 m/s. She hits a 60 g tennis ball that was approaching her at a speed of 19 m/s. The ball rebounds at 35 m/s. A.) How fast is her racket moving immediately after the impact? You can ignore the interaction of the racket with her hand for the brief duration of the collision. B.) If the tennis ball and racket are in contact for 10 ms, what is the average force that the racket exerts on the ball?

An airplane propeller is rotating at 1900 rpm (revolutions per minute). How many seconds does it take for the propeller to turn through 35o?

A car driving around a circular track has a centripetal acceleration of 97 m/s2 until it hits a slick spot and slides straight off the track. If the radius of the track is 61 m, what is the car's speed v when it leaves the track?

An electron is circularly orbiting a proton. The magnitude of acceleration of the electron is 2.89E8 m/s2. What is the electron’s orbital radius (in meters)?