Work and Power Worksheet
A Grade 7 science worksheet covering fundamental concepts of work, power, and related calculations.
Includes
Standards
Topics
Work and Power
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following is the correct definition of work in physics?
The amount of effort applied to an object.
Force multiplied by the distance an object moves in the direction of the force.
The rate at which energy is transferred.
The ability to do work.
2. What unit is used to measure power?
Joules (J)
Newtons (N)
Watts (W)
Meters (m)
3. Work is done when a force causes an object to in the direction of the force.
4. Power is calculated by dividing by .
5. If you push on a wall with great force, but the wall does not move, you have done work.
True
False
6. A powerful engine can do more work than a less powerful engine in the same amount of time.
True
False
7. Calculate the work done if a force of 50 N is applied to move a box 5 meters.
8. A student lifts a 20 N book 1.5 meters in 3 seconds. Calculate the power exerted by the student.