Kinetic Energy Worksheet

Name______Period______

1. A large chunk of ice with mass 15 kg falls from a roof. Find the kinetic energy of the ice when it reaches the ground at a velocity of 12.52 m/s.

2. A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the bike and the rider is 85 kg. Find the kinetic energy of the bike and rider.

3. What is the kinetic energy if the mass of the bike and rider were doubled?

4. Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s

5. If the roller coaster car in the above problem has a kinetic energy of 800,000 J, then how fast would it be going?

6. A rocket is launched straight up with a speed of 44.27 m/s. The kinetic energy of the rocket is 1960 J. What is the mass of the rocket?

Name ______Period ______

PE, KE, and Conservation of Energy

1. A 20 kg rock is on the edge of a 100 meter cliff. Calculate the potential energy of the rock.

2. Missy Dewater, the former platform diver for the Ringling Brother's Circus, had a kinetic energy of 100 J just prior to hitting the bucket of water. If Missy was traveling 6.32 m/s, then what is her mass?

3. How high was the platform from which Missy jumped? Assume no energy was lost

4. A 750-kg compact car moving at 27.8m/s has approximately 290 000 Joules of kinetic energy. What is the kinetic energy of the same car if it is moving half as fast, 13.9m/s?

5. Calculate the potential energy, kinetic energy,

mechanical energy, velocity, and height of the

skater at the various locations.

6. Calculate the potential energy, kinetic energy, mechanical energy, velocity, and height of the ball at the various locations.