Determine whether the objects in the following problems have kinetic or potential energy. Then choose the correct formula to use. KE = OR PE = m x g x h g= 10 m/s2

1. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has energy. Calculate it.

2. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weights 12 N. The carriage has energy. Calculate it.

3. A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has energy. Calculate it.

4. A cinder block is sitting on a platform 20 m high. It weighs 79 kg. The block has energy. Calculate it.

5. There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell has energy. Calculate it.