iGCSE Work and Power

iGCSE Work and Power

10th Grade

15 Qs

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iGCSE Work and Power

iGCSE Work and Power

Assessment

Quiz

Physics

10th Grade

Practice Problem

Medium

Created by

George Mortley

Used 16+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the work done in moving the pendulum with mass 0.25 kg through a height of 0.5 m?

0.125 J

  1. 0.00125 J

1.25 J

2 J

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Another pendulum has a mass of 200 g and falls through a height of 0.25 m. Assuming there is no air resistance, what is the pendulum’s maximum speed at the bottom of its fall (g = 10 m/s^2)?

2.2 m/s

5 m/s

10 m/s

100 m/s

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following equations for calculating work done is correct?

work done = power × time

work done = energy transferred

work done = force × distance in the direction of the force

all of the above

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student lifts a 15 N mass through a distance of 1.5 m. What is the work done?

22.5 J

10 J

0.1 J

15 J

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which are the units of work?

watts

joules

seconds

N/m

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A weightlifter lifts a barbell of mass 45 kg through a height of 0.75 m. What is the gravitational potential energy gained by the barbell (gravity = 10 N/kg)?

60 J

100 J

337.50 J

33.75 J

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A motorcyclist is travelling at a speed of 35 m/s. The engine of the bike provides a force of 250 N to the motorbike. What is the work done by the motorbike in 1 second?

7 J

8750 J

140 J

10 000 J

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