Work and Power

Presentation

•

Physics

•

10th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS3-1, HS-PS2-1, MS-PS3-4

Standards-aligned

Christopher Nguyen

Used 768+ times

FREE Resource

6 Slides • 14 Questions

Work and Power

Work

A force applied to an object over a set distance

Multiple Select

Two factors that determine work are...

Force

Mass

Velocity

Distance

Work Formula

Work is found by multiplying Force and distance

Multiple Choice

If the object does not move then what is happening

nothing

work

power

no work is being done on the object

Multiple Choice

The ( ) the force the ( ) work is done

less, more

smaller, more

bigger, more

bigger, less

Multiple Choice

Fred kicks a ball with a force of 20N to George, who is 5M away.

How much work was done to the ball?

25 J

100 J

4 J

75 J

Multiple Choice

If you push a cart with a force of 60 N for 2 m... how much work have you done?

120 J

30 J

120 N

30 N

Multiple Choice

You do work when you mannequin pose with an object in your hand.

True

False

Power

Power is the rate at which something does work over a period of time

Multiple Choice

Work divided by time equals...

energy

power

Multiple Choice

The unit used to measure power is the

Watt

Newton

Joule

Newton*meter

Power Formula

Power is found by dividing by Work done by the time taken

Multiple Choice

How much time is needed to produce 720 Joules of work if 90 watts of power is used?

0.125 s

8 s

64800 s

80 s

Multiple Choice

Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power.

Person A

Person B

Multiple Choice

You do 90 joules of work in 30 seconds. How much power have you generated?

30 watts

3 watts

120 watts

270 watts

Work and Power

Multiple Choice

A force of 4.6 N moves a 2.7 kg box a distance of 3.3 m in 6.8 s. How much power is exerted?

2.23 W

6.03 W

17.4 W

278.7 W

Multiple Choice

Which of the following would produce the most power?

A mass of 10 kilograms lifted 10 meters in 10 seconds

A mass of 10 kilograms lifted 10 meters in 5 seconds

A mass of 5 kilograms lifted 10 meters in 5 seconds

A mass of 5 kilograms lifted 5 meters in 10 seconds

Multiple Choice

You move an 8-newton weight five meters in 4 seconds. How much power have you generated?

160 watts

10 watts

6.4 watts

17 watts

Work and Power

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