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Whistle While You Work

Total questions: 35

Worksheet time: 51mins

Name
Class
Date
1.

Force = 200 Newtons; distance = 50 meters; Work = ?; Answer with unit of measure:

a)

W = 10,000 J

b)

W = 4 J

c)

W = 1,000 J

d)

W = 40 J

2.

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

a)

True

b)

False

3.

Two factors that determine work are...

a)

Force

b)

Mass

c)

Velocity

d)

Distance

4.

Units of force are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

5.

Units of work are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

6.

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

a)

120 J

b)

30 J

c)

120 N

d)

30 N

7.

What is the formula for work?

a)

Force = work × distance

b)

Distance = force × work

c)

Work = force × distance

d)

Work = force × mass

8.

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


How much work was done to the ball?

a)

25 J

b)

100 J

c)

4 J

d)

75 J

9.

If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?

a)

8000 J

b)

8000 N

c)

4000 J

d)

2000 J

10.

If the mystery machine moves 100 meters how much work is done?

a)

130,000,000 J

b)

70,000 J

c)

100,000 J

d)

30,000 J

11.

If Jay Loppy pushes his van 20 meters how much work is done?

a)

2,000 J

b)

40,000 J

c)

10,000 J

d)

800,000 J

12.
What is the work done when a 20-N force pushes a cart 3.5 m?
a)
70J
b)
6.8J
c)
23.5J
d)
17.5J
13.

A new conveyor system at the local packaging plan will utilize a motor-powered mechanical arm to exert an average force of 890 N to push large crates a distance of 12 meters in 22 seconds. Determine the power output required of such a motor.

a)

490 Watts

b)

40. Watts

c)

11 x 103 Watts

d)

0.55 Watts

14.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
15.
In which of the following situations do your arms do work on books?
a)
holding a heavy stack of books while standing
b)
carrying a heavy stack of books
c)
dropping a stack of books onto a table
d)
picking up a pile of books from the floor
16.
What unit do we use for measuring power?
a)
Watts 
b)
Joules 
c)
Newtons 
d)
ft/lbs
17.
What is the difference between calculating power and work?
a)
Power takes into account the time it takes to complete a task
b)
Work takes into account the time it takes to complete a task
c)
Power is force/area
d)
Work is force/area
18.

Mr. B's and Mr. P's classes competed in a game of tug of war. Mr. B's class pulled to the right with a force of 4,000 N. Mr. P's class pulled to the left with a force of 5,000 N. As a result the rope moved 5.1 m to the left. How much work was done by the net force?

a)

4100 J

b)

3100 J

c)

5100 J

d)

45900 J

19.
Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit?
a)
0.5 m
b)
2 m
c)
4 m
d)
10 m
20.

What is the equation for work?

a)

Ep= mgh

b)

W = F x d

c)

F = mg

d)

F = ma

21.

If you pull the trolley along a flat floor horizontally. Which force do you use to calculate the work done.

a)

Weight

b)

Pulling force

22.

If you pull the trolley vertically upwards using a crane. Which force do you use to calculate the work done.

a)

Weight

b)

Pulling force

23.

Mike and Ian move 50 m on a snow lift which uses 750 N of force to move them in 75 seconds. Calculate the power of the lift.

a)

750 W

b)

500 W

c)

7500 W

d)

2812500 W

24.

Ian and Steve ski down the 75 m slope in 80 seconds using 400 N of penguin force. Calculate their penguin power!

a)

375 W

b)

37.5 W

c)

426.7 W

d)

240 000W

25.

Bob (80 kg) uses 180 N of force to get him up the slope. The vertical distance is 2 m and the diagonal is 10 m. Calculate the work he does.

a)

1600 J

b)

160 J

c)

3600 J

d)

1800 J

26.
What is the SI unit for distance?
a)
meter
b)
kilometer
c)
newton
d)
centimeter
27.
What is the SI unit for time?
a)
second
b)
minute
c)
hour
d)
meter per second
28.
What is the SI unit for speed?
a)
meter per second
b)
meter per second squared
c)
meter
d)
second
29.
What is the SI unit for mass?
a)
kilogram
b)
gram
c)
pound
d)
newton
30.
What is the SI unit for acceleration?
a)
meter per second squared
b)
meter per second
c)
meter
d)
second
31.
What is the SI unit for force?
a)
newton
b)
pound
c)
kilogram
d)
meter
32.
What is the SI unit for energy?
a)
joule
b)
watt
c)
newton
d)
kilogram
33.
What is the SI unit for work?
a)
joule
b)
watt
c)
newton
d)
kilogram
34.
What is the SI unit for power?
a)
watt
b)
joule
c)
newton
d)
kilogram
35.
Energy is
a)
the ability to do work.
b)
the rate at which work is done.
c)
the force applied to an object for a distance.
d)
none of the above.

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