Work, Power, and Efficiency

Work, Power, and Efficiency

6th - 9th Grade

13 Qs

quiz-placeholder

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Work, Power, and Efficiency

Work, Power, and Efficiency

Assessment

Quiz

Other

6th - 9th Grade

Medium

Created by

Cammie Plymell

Used 47+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You are pushing a car as hard as you can for 5 minutes, but cannot get it to move.  How much work have you done on the car?
There is not enough information to calculate the work.
If you used 20 newtons of force, you will have done 100 Joules of work
None. There was no movement.
None of the answers are correct.

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the work of a turtle that has a force of 27 newtons and travels a distance of 3 meters.
81 watts
81 joules
9 watts
9 joules

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A bird used 8 watts of power and flew for 5 seconds.  How much work did the bird do?
40 watts
40 joules
1.6 watts
1.6 joules

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How much power is needed to do 648 Joules of work in 100 seconds?
64800 Joules
64800 watts
6.48 watts
0.15 watts

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How long does it take to do 432 joules of work with 75 watts of power?
.17 seconds
5.76 seconds
5.76 meters
32400 seconds

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

measures the ratio of work output to work input
joules
power
work
efficiency

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J or work are done by the machine?
0.25 Joules
26%
3.86 Joules
386%

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