Work and Power

Work and Power

Assessment

Assessment

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Deleted User

Physics

7th - 8th Grade

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10 questions

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1.

Multiple Choice

45 sec

1 pt

Which of the following is a true statement about work?

It measures how quickly an object accelerates 

It measures how much effort is applied over a certain distance

It measures the change in an object's rate of speed

It measures how much time it takes to move a massive object

2.

Multiple Choice

45 sec

1 pt

What does one newton exerted over a distance of one meter equal?

One watt

One hertz

One volt 

One joule 

3.

Multiple Choice

30 sec

1 pt

Media Image

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

77 J

7.7 J 

0.7 J 

770 J 

4.

Multiple Choice

1 min

1 pt

Media Image

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

600 J 

660 J

900 J 

1200 J 

5.

Multiple Choice

45 sec

1 pt

Simple machines make work easier by increasing what?

The distance over which work is done 

The force needed to do work 

The time required to do work

The acceleration of a massive object 

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