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WorksheetsWork, Energy, Power, and Simple Machines
Total questions: 20
Worksheet time: 49mins
What is the metric unit for work?
Joule
Pascal
Newton
Watt
What is the metric unit for energy?
Joule
Pascal
Newton
Watt
What is the metric unit for power?
Joule
Pascal
Newton
Watt
A 75 kg refrigerator is located on the 70th floor of a skycraper (300 m above ground). What is the potential energy of the refrigerator?
20,500 J
25000 J
2,220,500 J
220,500 J
At what height is an object that has a mass of 50 kg, if its gravitational potential energy is 9800 J?
20 m/s
200 m
20 m
200 m/s
Calculate the kinetic energy of a truck that has a mass of 2900 kg and is moving at 55 m/s.
4,386,250 W
4,386,250 J
4,386,250 N
4,386,250 Pa
What is the kinetic energy of a 3 kg ball that is rolling 2 m/s?
6 J
6 N
6 Pa
6 W
A horse performs 15,000 J of work pulling a wagon for 20 seconds. What is the horse power?
30000 N
300000 Pa
7500 J
750 W
The power rating of an electric lawn mower is 2000 W. If the lawn mower is used for 120 seconds, how many joules of work can it do?
24,000 N
240,000 J
24,000 Pa
240,000 W
Amy uses 20 N of force to push a lawn mower 10 meters. How much work does she do?
200 Pa
20 W
20 N
200 J
How much work does an elephant do while moving a circus wagon 20 meter with a pulling force of 200 N?
400 J
4,000 W
4,000 J
400 W
It is used to hold objects together.
(a)
It is used to push, pull, or lift things.
(a)
It helps to move heavy objects up or down.
(a)
It is used to lift heavy objects by changing the direction or amount of force.
(a)
It is used to cut or split other objects.
(a)
It is used to move or turn things.
(a)
What are the examples of wheel and axle?
Ramp
Bicycle wheel
Roller skates
Door knob
Which of the following is not an example of screw?
Knife
Jar lid
Wood screw
Faucet
It is defined as the tools that make the work easier.
(a)
