Answer:
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 KINETIC energy. Calculate it.
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby
weighs 12 N. The carriage has POTENTIAL energy. Calculate it.
Step-by-step explanation:
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 KINETIC energy. Calculate it.
Calculate:
KE = 1/2mv^2=1/2(2.1kg)(30m/sec)^2= 945J
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby
weighs 12 N. The carriage has POTENTIAL energy. Calculate it.
Calculate: PE = 2kg(9.8m/sec^2)21m = 411.6J