What is the equation for gravitational potential energy?
mgh
100
What do we call doing work over a period of time?
Power
100
A doofus jumps off of a building into a swimming pool. Besides dissipated, what type of energy will he have as he enters the pool?
Kinetic
200
What type of energy is associated with position?
Potential
200
If the velocity of an object QUADRUPLES, by how much does its kinetic energy increase?
16x
200
A 20 kg object sits on a 5 meter-high shelf. How much gravitational potential does it have?
980 J
200
An object has been pushed to increase its speed. What do we call what has been done?
Work
200
A bungee cord is attached to a jumper. The dude jumps and bounces a couple of times. He finally comes to rest hanging from the bridge. Besides dissipated, which types of energy are present as he hangs there?
Elastic and gravitational
300
What type of energy is associated with gravity?
Gravitational Potential Energy
300
What happens to the kinetic energy of an object if you double its mass?
It doubles
300
A spring has a spring constant of 1000 N/m and is stretched 10 m. How much Elastic Potential Energy does it have?
50000 J
300
A 200 Watt light bulb is kept on for 3 minutes. How much energy was expended?
36000 J
300
A basketball player tosses up a 0.5 kg basketball with a speed of 10 m/s. How high does it get?
about 5 meters.
400
What type of energy is associated with springs?
Elastic Potential
400
An object of mass 20 kg is moving at 10 m/s. How much kinetic energy does it have?
1000 J
400
A 10.2 kg object has 100000 Joules of gravitational potential energy. How high up is the object?
1000 m
400
A big, strong dude pushes a 2000 kg car with a force of 4000 N a distance of 50 meters. How much work did he do?
200000 J
400
A 0.05 kg arrow traveling at 100 m/s embeds itself into a tree 5 cm. How much force did the tree exert on the arrow?
5000 N
500
What do we call the transfer of energy?
Work
500
A 10 kg object has 8000 joules of kinetic energy. How fast is it moving?
40 m/s
500
A Trampoline has 10000 joules of energy stored up. If the spring constant of the trampoline is 30000 N/m, how far is it being stretched?
0.81 meters
500
A horse pulls a wagon with 3000 N of force for a distance of 100 meters. It takes exactly 10 minutes to do this. How much POWER did the horse expend?
500 Watts
500
While doing parkour, a 50 kg doofus jumps off a building. This building is 5 meters high. How fast will he be traveling when he reaches the ground?