Free Printable Book 2 Unit 2: Lesson 1 Quiz

1.

What is the unit for work?

a)

Joules

b)

Newton

c)

Watts

2.

The SI unit for power is...?

a)

Watts

b)

Joules

c)

Newtons

d)

Metres

3.

How do you calculate power?

a)

P = W / t or E / t

b)

P = T / w

c)

P = w x t

d)

P = bbq/chicken

4.

How do we calculate work?

a)

W = F x d

b)

W = f / D

c)

W = F + D

d)

W = f - d

5.

What will be the formula if we are finding the TIME using the formula of power?

a)

$Time\ =\ \frac{energy\ \left(work\ done\right)}{power}$

b)

$Time\ =\ \frac{power}{energy\ \left(work\ done\right)}$

c)

$Time\ =\ energy\ \left(work\ done\right)\ x\ power$

6.

The ability to do work or cause change:

a)

work

b)

energy

c)

momentum

d)

power

7.

What are the factors that can affect the power?

a)

Work done and time

b)

Work done and velocity

c)

Work done and force

8.

Which of the given pictures shows that work is not done?

a)

b)

c)

9.

Boss kicks a ball with 15 Newtons of force causing it to travel 200 meters. How much work is done on the ball?

a)

200 J

b)

3000

c)

3000 N

d)

3000 J

10.

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

a)

18 m

b)

4 m

c)

10 m

d)

6 m

11.

Two workers use 100 N of force to move a sofa 2 meters in 2 seconds. How much power is required?

a)

100 watts

b)

400 watts

c)

104 watts

d)

50 watts

12.

How much work is being done with 200 N of force over 456 meters?

a)

84,000 J

b)

91,200 N

c)

91,200 J

d)

62,329 J

13.

Someone takes 11 minutes to walk up a hill that is 120m high. Their weight is 550N. How much power did they use?

a)

100 N

b)

66,000 W

c)

100 W

d)

66,000 J

14.

A 100 N force is applied to move an object the distance of 5 meters at constant speed for 10 seconds. How much power is used?

a)

50J

b)

50W

c)

500J

d)

500W

15.

If 150 Joules of work is needed to move a box 10 meters, what was the total force used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

16.

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

a)

272 m

b)

17 m

c)

4.05 m

d)

272 cm

17.

A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Her power is:

a)

320 W

b)

400 W

c)

500 W

d)

2 000 W

18.

A man of weight 900 N walks up a hill of height 10 m. What is the total work done?

a)

0 J

b)

90 J

c)

900 J

d)

9000 J

19.

What is the work done by the man, if after pushing for 1 hour the wall has not moved.

a)

0 J

b)

65 J

c)

6500 J

d)

0.0065 J

20.

A man pushes a car over a distance of 3m. The man pushes the 1,400 kg car with a force of 500N. Find the amount of work done.

a)

1500 N

b)

1500 J

c)

1500 m

21.

A professional weight-lifter pulls a heavy weight over 500cm with a force of 600N. Find the amount of work done.

a)

3000

b)

300 J

c)

3000 J

d)

3000 N

22.

When a car stops, 600 J of work is done by the brakes in a time of 1 minute. Calculate the power of the brakes.

a)

600 W

b)

10 W

c)

10 N

23.

A kid applies a force of 70 N to a ball that moved 1.1 meters. How much work did he do on the ball?

a)

77 J

b)

7.7 J

c)

0.7 J

d)

770 J

24.

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

a)

30 watts

b)

3 watts

c)

120 watts

d)

270 watts

25.

What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 90%?

a)

25200 J

b)

2520 J

c)

0.0082J

26.

If 68 W of power is produced in 18 seconds, how much work is done?

a)

1,224 J

b)

0.264 J

c)

3.77 J

d)

12.24 J

27.

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

a)

600 J

b)

660 J

c)

900 J

d)

1200 J

28.

Was this quiz easy or hard?

a)

Easy

b)

Hard

Book 2 Unit 2: Lesson 1 Quiz

Total questions: 28

Worksheet time: 56mins

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