Q. After falling from rest from a height of 34 m, a 0.55 kg ball rebounds upward, reaching a height of 24 m. If the contact between ball and ground lasted 1.6 ms, what average force was exerted on the ball?

Q. A purse at radius 2.00 m and a wallet at radius 3.00 m travel in uniform circular motion on the floor of a merry-go-round as the ride turns. They are on the same radial line. At one instant, the acceleration of the purse is (2.10 m/s2) + (3.70 m/s2). At that instant and in unit-vector notation, what is the acceleration of the wallet?