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Work & Power

Physics

7th Grade

NGSS covered

Used 813+ times

Work & Power
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is a measurement of power?

100 joules
100 watts
100 meters per second
100 hertz

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is true about work?

It measures how quickly an object accelerates
It measures how much effort is applied over a distance.
It measures the change of an object's rate of speed.
It measures how much time it takes to move an object.

Tags

NGSS.MS-PS3-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When is positive work done?

When an object moves in the same direction as its force.
When an object moves in the opposite direction as its force.
When a force causes the object to move more quickly.
When an object stops moving.

Tags

NGSS.HS-PS2-1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What units do we use to measure work?

watts
newtons
joules
meters

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?

77 joules
70 joules
7.7 joules
11 joules

Tags

NGSS.MS-PS3-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know when a force has been applied to an object?

It moves.
It flies.
It accelerates.
It gets bigger.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation for calculating power?

distance / time
work x time
work / time
force x distance

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