Work
How much work is done by a 20 Newton force applied for 5 meters?
100 Joules
What is the formula for kinetic energy?
KE = 1/2mv^2
What is the formula for gravitational potential energy?
ΔPE = mgΔh
A pendulum is raised to eye level. It is then released and allowed to swing down. What type of energy does it start with at its maximum height and what type of energy does it have at the bottom of its swing?
Gravitational potential energy, kinetic energy
What is the formula for power?
P = ΔE/Δt
How much work is done by a 250 Newton force applied over 0.5 meters?
125 Joules
What is the kinetic energy of a car with a mass of 1250 kg traveling at 11 m/s?
75,625 Joules
What is the gravitational potential energy of a 3 kg object at a height of 6 meters?
180 Joules
Mr. C has a potato cannon. He points it straight up. What type of energy does the potato have the moment it leaves the barrel, and what type of energy does it have when it reaches its maximum height?
Kinetic energy, gravitational potential energy
How much power does a motor produce if it can transfer 400 Joules of energy in 5 seconds?
80 Watts
392 Joules of work is done by a 14 Newton force. What distance was this force applied over?
28 meters
What is the kinetic energy of a 2 kg object moving at 75 m/s?
5625 Joules
What is the gravitational potential energy of a 12 kg object at a height of 4.5 meters?
529.2 Joules
Mr. Whetstone drops a bowling ball from the top of BVT. What type(s) of energy does the bowling ball have when it is halfway down?
Kinetic and gravitational potential
How much energy can a car engine produce if it can generate 500 Watts of power for 6 seconds?
3000 Joules
900 Joules of work is done by pushing a block for 2 meters. What is the force applied?
450 Newtons
A golf cart has 960 Joules of kinetic energy. If it is moving at 4 m/s, what is its mass?
120 kg
Mr. C is on top of the roof of his house. His mass is 90 kg. If he has 8820 Joules of gravitational potential energy, how high from the ground is he?
10 meters
5.42 m/s
How long does it take for a 450 Watt engine to deliver 7200 Joules of energy?
16 seconds
John and Jane each push on a wagon. John pushes with 40 Newtons and Jane pushes with 25 Newtons in the opposite direction. If they push the wagon for 13 meters, how much total work is done?
195 Joules
Mr. E has a mass of 60 kg. If he has 48,000 Joules of kinetic energy, how fast is he moving?
40 m/s
A hot air balloon has 980,000 Joules of gravitational potential energy. If it is at a height of 1000 meters, what is its mass?
100 kg
A 0.25 kg toy rocket leaves its launch pad on the ground with a velocity of 25 m/s. How high does the rocket reach?
31.89 meters
0.75 or 75%