Question

Determine whether the objects in the following problems have kinetic or potential energy. Then choose the
correct formula to use:
KE= 1/2 m v2
PE = mass x gravitational acceleration (9.8m/s2) x height OR Weight x Height
Energy=joules
Weight=Newton
Mass=kilograms
Velocity= m/s
Gravitational acceleration=(9.8 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 weighs 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 ka The car has... energy. Calculate it.​

Answer 1

Answer:

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