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IS2 Unit 3 Test: Work, Energy, & Power

By Jessica Ackerman
Last updated over 2 years ago
15 Questions
Use the equations on the board to answer the following questions.

Work is performed when

Match the following vocabulary words to their definition.

the ability to do work
energy that an object has due to its motion
the law that states that energy cannot be created or destroyed but can be changed from one form to another
the potential energy of an object due to its height, or its position relative to the earth's surface

It took a 36,000 N force to make a car move 1,500 meters. How many Joules of work is performed to make the car move?

An elevator lifts a load of passengers with a force of 156,000 N and does 2,550,000 J of work. How many meters did the elevator transport passengers?

Order the following from most kinetic energy to least.

  1. 181 kg motorcycle traveling at 10 meters/second
  2. 6,300 kg elephant traveling at 10 meters/second
  3. 1,900 kg car traveling at 10 meters/second

A dog runs through the school at 5.6 m/s and has a mass of 40 kg. what is the dog's kinetic energy?

Quarter Horses are typically faster than Thoroughbreds over short distances. A racehorse can run at 18 m/s and has 195,000 J of kinetic energy. What is this racehorse's mass?

How much potential energy does a squirrel up in a tree have? The squirrel has a mass of approximately 3 kg and is 14 meters high.

A city sets up a hydroelectric dam and they need about 25,000,000 J of energy produced every second. What is the mass of water that is necessary to create that kind of potential energy, if the dam is 42 meters high?

Categorize the examples below as either potential energy or kinetic energy.

  • A roller coaster moving at the bottom of a hill
  • A boulder rolling down a hill
  • An apple hanging from a tree
  • A jack in the box before it's released
  • A soccer ball moving across the field after it's been kicked
  • A baseball player swinging a bat
  • A boulder sitting at the top of a hill
  • A book sitting on a shelf
  • Potential Energy
  • Kinetic Energy
S.6.B.8.a

At what point does the object have the most potential energy?

At what point does the object have the most kinetic energy?

As Bob jumps off the couch, his potential energy equals 50 J. What is his kinetic energy if his total mechanical energy is still 150 J?

If the power rating of a incandescent light bulb is 60 Watts, then how much time does it take the light bulb to run to acheive 120 J of work?

Someone wearing skates on a horizontal surface is pushed by a friend with a force of 65 N. How far must the student be pushed in 30 seconds, so that her power is 352 W?