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4.2 Work B

Total questions: 34

Worksheet time: 22mins

Name
Class
Date
1.

What is the SI/Metric unit used to measure force?

a)

pounds

b)

grams

c)

newtons

d)

friction

2.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
3.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
4.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
5.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
6.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
7.
What best describes the mass and weight of a person as they move around the universe?
a)
mass and weight changes
b)
Mass and weight stays constant
c)
weight remains constant, mass changes
d)
Mass stays constant, weight changes
8.

What is the metric unit used to measure the gravitational pull of an object?

a)

mass

b)

weight

c)

gram

d)

Newton

9.

A bottle of water has a mass of 10 kilograms. What is its weight?

a)

9.8 grams.

b)

98.1 N

c)

900 N

d)

5 N

10.

The formula for Work is...

a)

W = mg

b)

W = Fd

c)

P = W/t

d)

W = Pt

11.

The formula for weight is...

a)

W = mg

b)

W = Fd

c)

W = Ft

d)

W = Pg

12.

Two factors that determine work are

a)

force

b)

acceleration

c)

mass

d)

distance

e)

velocity

13.

units for work are

a)

Newtons

b)

Joules

c)

meters

d)

seconds

14.

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

15.

Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball?

a)

25J

b)

100J

c)

4J

d)

75J

16.

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

a)

130,000,000J

b)

70,000J

c)

100,000J

d)

30,000J

17.
Which one is a unit of distance?
a)
meter (m)
b)
gram (g)
c)
liter (L)
d)
Joule (J)
18.
Which situation is work not done?
a)
lifting a 20 pound box off the floor
b)
holding a 20 pound box above the floor
c)
sliding a 20 pound box across the floor
d)
sliding a 20 pound box up an inclined plane
19.
What is work?
a)
A push or pull.
b)
When the object moves in the same direction in which the force is exerted.
c)
A change in energy.
d)
The rate at which energy is transferred.
20.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
21.
Which of the following is the best example of work being done? 
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
22.
An example of work is holding a heavy bag.
a)
True
b)
false
23.
How many joules of work are done against a cart when a force of 50 N pushes it 1 kilometer away?
a)
7000 J
b)
5000 J
c)
5500 J
d)
6600 J
24.

Calculate the work done by a 47 N force pushing a pencil 0.26 m.

a)

12.2 J

b)

135 J

c)

0.92 J

d)

1113 J

25.

Is this an example of work?

a)

Yes

b)

No

26.

You have to push with 15 N of force to move it 10 meters. How much work do you do?

a)

15 Joules

b)

150 Joules

c)

1.5 Joules

d)

.67 Joules

27.

500 J of work is done by a person who uses a force of 50N to move a box, how far does it go?

a)

10 m

b)

0.1 m

c)

25,000 m

d)

10 J

28.

Who is doing the most work?

a)

A horse pulling a wagon of 100 N a distance of 5 m.

b)

A horse pulling a wagon of 200 N a distance of 5 m.

c)

A horse pulling a wagon of 50 N a distance of 5 m.

d)

A horse pulling a wagon of 400 N a distance of 5 m.

29.

Who's doing the most work?

a)

A girl weighing 45 N climbing 5 meters.

b)

A girl weighing 45 N climbing 3 meters.

c)

A girl weighing 45 N climbing 2 meters.

d)

A girl weighing 45 N climbing 1 meter.

30.

Who is doing the most work?

a)

A baby pushing 10 N of groceries 5 meters.

b)

A baby pushing 20 N of groceries 2 meters.

c)

A baby pushing 80 N of groceries 1 meter.

d)

A baby pushing 30 N of groceries 2.5 meters.

31.

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?

a)

200 J

b)

20.0 J

c)

100 J

d)

10 J

32.

If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to.

a)

400m

b)

40m

c)

50m

d)

4m

33.

You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?

a)

54 J

b)

6.0 J

c)

21 J

d)

27 J

34.
Calculate the work needed to raise a 3 kg cat up to a height of
4 m.
a)
12 J
b)
0 J
c)
120 J
d)
1.22 J

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