Quiz Practice
Calculating Potential Energy
1. A 50 kg diver stands at the top of a 10m diving board. What is his potential energy?
2. When the diver jumps and is half way down to the water, what is his potential energy?
3. When the diver reaches the water, what is his potential energy?
Calculating Kinetic Energy
1. A 50 kg diver stands at the top of a 10m diving board. What is his kinetic energy?
2. When the diver jumps and is moving at 5 m/s. What is his kinetic energy?
3. When the diver reaches the water, what is his potential energy?
Conservation of Energy
1. A roller coaster at the top of its first hill has 100,000J of potential energy. How much potential energy will it have when it reaches the bottom of the hill?
2. How much Kinetic Energy will the roller coaster have at the bottom of the hill?
3. A 2 kg bowling ball sits at the top of a ramp that is 10m high. If it rolls down the ramp, what will its kinetic energy be?
4. A 2 kg bowling ball sits at the top of a ramp that is 10 m high. What is its potential energy half way down the ramp?
5. Starting from rest, a 2 kg block of wood slides a distance of two meters down a frictionless slope, as shown above. What is the kinetic energy of the block at the bottom of the slope?
Calculating Momentum
1. A 3 kg bowling ball moves down the lane at 3 m/s. Calculate its momentum.
2. A 50 kg skier jumps off a 50 foot jump at 5 m/s. Calculate her momentum.
Elastic Collisions
1. A 3 kg bowling ball moving down the lane at 3 m/s hits another 3 kg bowling ball and comes to a stop. How fast will the second bowling ball travel after it’s been hit?
2. A 3 kg bowling ball moving down the lane at 3 m/s hits a 6 kg bowling ball and comes to a stop. How fast will the second bowling ball travel after it’s been hit?
Inelastic Collisions
1. A 100 kg lineman moving at 3 m/s hits a 50 kg quarterback that is standing still. If the lineman keeps ahold of the quarterback, how fast will they be traveling after the hit?
2. A 50 kg fisherman jumps into a 100 kg boat at a speed of 2 m/s. After the fisherman lands in the boat, how fast does the boat and fisherman travel?