Work, Power and Energy

Work, Power and Energy

8th Grade

10 Qs

quiz-placeholder

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Work, Power and Energy

Work, Power and Energy

Assessment

Quiz

Physics

8th Grade

Hard

Created by

McWill Sangga

Used 21+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which of the following illustrations shows that there is no work done?

Media Image
Media Image
Media Image
Media Image

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When using a machine, what would you call the work done by the machine?

work in

work out

distance in

distance out

efficiency

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The efficiency of a ramp is 86.7%. If the ramp does 65 J of work, how much work have you done?

more than the work done by the ramp

less than the work done by the ramp

the same amount of work done by the ramp

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following situations shows No Work is done?

a boy pushing his toy cart

an audience sitting on the bench

a janitor pushing a chair to the corner

a bride throwing her bouquet of flowers

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is there work done by pushing a wall for three hours?

Yes, because a force is exerted on the wall.

Yes, because you push the wall for three hours.

None, because the wall is too heavy to push.

None, because the wall did not change its position.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When is work done on an object?

when the force is zero

when the displacement is zero

when the displacement is not zero

when force and displacement are perpendicular

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Two equal mass marbles are at the top of a ramp. One marble falls to the ground off the back while the other rolls down the ramp. What is true about the marbles when they reach the ground?

The marble that rolled down the ramp is moving faster than the marble that fell.

The marble that fell down the back of the ramp is moving faster than the marble that rolled.

The marble that rolled down the ramp is not moving when it reaches the ground.

The two marbles are moving with the same speed.

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