Work & Power

Presentation

•

Science, Physics

•

8th - 11th Grade

•

Easy

•

NGSS

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

Standards-aligned

Mike Newsome

Used 52+ times

FREE Resource

21 Slides • 17 Questions

Work & Power

Multiple Choice

How much work you do depends on what 2 things?

how much force needed and how big the item is

how much force needed and how far something needs to move

how big the item is and how far it needs to move

what color and size the item is

Multiple Choice

What does work mean in science?

being at a job

the act of moving something

the act learning in school

being at a construction site

Multiple Choice

In which of these cases is work being done?

A student sleeps all night.

A student pushes a locked door that does not move.

A student carries his chair into another room.

A student sits on the carpet.

Multiple Choice

Why isn't pushing against a wall work?

a. the wall is too big

b. the wall doesn't move when you push it

c. the wall is an object not a person

d. it is not a job you can earn money at

Multiple Choice

What units do we use to measure work?

watts

newtons

joules

meters

Multiple Choice

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

Multiple Choice

A 500N block is lifted 10 m. How much work was done?

5000 J

500 J

50 J

5 J

Multiple Choice

A young man exerted a force of 9,000 newtons on a stalled car but was unable to move it. How much work was done?

9,000 J

0 J= No work

Multiple Choice

A force of 100 newtons was necessary to lift a rock. A total of 150 joules of work was done. How far was the rock lifted?

1.5m

15,000 m

Multiple Choice

It took 50 joules to push a chair 5 meters across the floor. With what force wast the chair pushed?

250N

10N

Multiple Choice

What is the equation for calculating power?

distance / time

work x time

work / time

force x distance

Multiple Choice

The SI unit for power is...?

Watts

Joules

Newtons

Meters

Multiple Choice

Power is a measure of how much ______ can be done in a set amount of ______.

Work, Time

Work, Energy

Energy, Force

Force, Work

Multiple Choice

What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?

56, 250 watts

250 watts

Multiple Choice

While rowing across the lake during a race, John does 3960 J of work on the oars in 60 seconds. What is his power output in Watts?

56W

100W

66W

None of the answers are correct

Multiple Choice

Suppose you are moving a 300N box of books. Calculate your power output in the following situations;

a. You exert a force of 60N to push the box across the floor 12m in 16 seconds.

300 N

16 J

36 W

45 W

Multiple Choice

How much power is required to lift a 30N chair, as high as 0.20m in 2s?

1 W

7 W

3 W

15 W

Work & Power

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