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S2 Forces and Motion

Total questions: 57

Worksheet time: 48mins

Name
Class
Date
1.

Which of these can a force do?

a)

Create a noise

b)

Heat up an object

c)

Change the shape, speed and direction of an object

d)

None of these

2.

What is the unit of force

a)

grams

b)

kilograms

c)

Newtons

d)

m/s

3.

What do you use to measure force?

a)

A ruler

b)

A newton balance

c)

with scales

d)

with a stopclock

4.

A force meter contains a

a)

elastic band

b)

spring

c)

mass

d)

timer

5.

For a force meter, the extension increases

a)

when masses are removed from the meter

b)

when no mass is added to the meter

c)

when more mass is added to the meter

d)

when there is no gravity

6.

Forces acting because two objects are touching are called

a)

touch forces

b)

contact forces

c)

non-contact forces

d)

reaction forces

7.

The force causing a airplane to take off is called

a)

upthrust

b)

lift

c)

weight

d)

bouyancy

8.

The upward force causing an object to float is

a)

upthrust

b)

floating

c)

treading water

d)

bouyancy

9.

Gravity is an example of a

a)

contact force

b)

non-contact force

c)

electric force

d)

magnetic force

10.

Playgrounds are designed to keep children safe by

a)

using bark as a surface

b)

using grass as a surface

c)

using rubber tiles as a surface

d)

all of the above

11.

Cars are designed to

a)

increase the force on a passenger in an accident

b)

remain rigid during a collision

c)

have non-collapsible steering columns

d)

reduce the force on a passenger during an accident

12.

Airbags keep passengers safe in cars by

a)

increasing the force during a collision

b)

increasing the time it takes the passenger to stop

c)

decreasing the time it takes the passenger to stop

d)

non of the above

13.

Which of the following are not features of cars designed to keep you safe?

a)

airbags

b)

seatbelts

c)

crumple zones

d)

DAB radio

14.

A car is moving at a constant speed. The forces acting on the car are

a)

unbalanced

b)

balanced

c)

greater than gravity

d)

greater than weight

15.

When the forces acting on a car are balanced, the car is

a)

stationary

b)

accelerating

c)

moving at a constant speed

d)

decelerating

16.

A skydiver is falling through the air at a constant speed. The weight of the skydiver is 600 N. The size of the force of air resistance on the skydiver is

a)

more than 600 N.

b)

less than 600 N

c)

equal to 600 N

d)

equal to the mass of the skydiver

17.

When the forces acting on an object are balanced, they are equal and

a)

in the opposite direction

b)

in the direction

c)

always upward

d)

always downward

18.

Which of the following statements are true?

a)

If an object is stationary, there are no forces acting on it.

b)

When a parachute is opened, the skydiver is stationary.

c)

An object can move with balanced forces acting on it.

d)

A moving object accelerates when balanced forces act on it.

19.

Weight is...

a)

Caused by gravity

b)

Measured in kilograms

c)

Measured in newtons

d)

Caused by upthrust

20.

On another planet, my weight is going to be

a)

The same

b)

Different

21.

On another planet, my mass is going to be

a)

The same

b)

Different

22.

Mass is a measure of

a)

the weight of an object

b)

the size of an object

c)

the amount of matter in an object

d)

the amount of volume in an object

23.

My mass is 65 kg. What is my weight on Earth?

a)

6.5 Newtons

b)

6.5 kilograms

c)

650 Newtons

d)

650 kilograms

24.

In Physics, the symbol 'g' stands for

a)

gravitational force strength

b)

gravitational field strength

c)

gravity

d)

the god particle

25.

Streamlining is

a)

making the shape smoother so it cuts through the air more easily

b)

making the object look better

c)

creating a shape which gives lower friction

d)

making the shape create more drag

26.

Friction is a force that

a)

acts to speed up an object

b)

acts to resist movement

c)

acts in the same direction as a moving object

d)

acts in the opposite direction of a moving object

27.

What is the name of the force that acts between the bike tyres and the road

a)

friction

b)

gravity

c)

push

d)

pull

28.

What happens to the force of friction when a surface gets wet?

a)

it decreases

b)

it increases

c)

it stays the same

d)

no change occurs

29.

What happens to the force of friction when you make a surface smoother?

a)

it stays the same

b)

it decreases

c)

it increases

d)

no change occurs

30.

Which of the following are examples of reducing the force of friction?

a)

separating the surfaces

b)

smoother surfaces

c)

lubrication

d)

increasing the surface area

31.

Which of the following is an example of non-helpful friction on a bike

a)

between wheels and road when wanting to go fast

b)

between hands and handlebars to help with grip

c)

between axle and wheels

d)

between foot and pedal to help foot stay on

32.

The strength of gravity has units of

a)

N

b)

N/kg

c)

Nm

d)

kg/N

33.
What type of force is shown in the picture?
a)
The Cat force
b)
Star Wars Force
c)
Unbalanced force
d)
Balanced  force
34.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
35.
Balanced forces do not change the objects speed or 
a)
direction
b)
distance 
c)
time
d)
mass
36.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
37.

Challenge Question:

Calculate the net force?

a)

5000 N right

b)

4000 N right

c)

40 N left

d)

4000 N left

38.
What is the net force in this picture?
a)
50 Newtons to the right
b)
950 Newtons to the right
c)
950 Newtons to the left
d)
50 Newtons to the left
39.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
40.
Which one is balanced?
a)
top
b)
bottom
c)
both
41.
Who wins the tug of war with what net force?
a)
The person on the left with 20 N
b)
The person on the left with 80 N
c)
The people on the right with 20 N
d)
The people on the right with 100 N
42.
According to Newton's First Law, an object at rest will tend to do which of the following?
a)
stay at rest
b)
stay in motion
c)
speed up
d)
change in direction
43.
According to Newton's First Law, an object in motion will tend to:
a)
stay at rest
b)
stay in motion
c)
change in direction
d)
slow down
44.
An object has a mass of 10 kg. What is its weight?
a)
0.98 kg
b)
0.98 N
c)
98 kg
d)
98 N
45.
Fill in the blanks: _____ does not change from place to place, but _____ can change because of differences in the strength of gravitational pull.
a)
acceleration, weight
b)
weight, acceleration
c)
mass, weight
d)
weight, mass
46.
There is a small amount of friction as the sled shown is pulled to the left. The friction points:
a)
up
b)
down
c)
left
d)
right
47.

To find an object's weight on Earth, multiply the mass by:

a)

1.6 N/kg

b)

10 N

c)

9.8 N/kg

d)

3.14

48.
An object weighs 100 N on Earth. To find the object's mass, one should:
a)
multiply by 9.8
b)
divide by 9.8
c)
multiply by 1.6
d)
divide by 1.6
49.
A 0.2kg mass hangs from a Newtons spring scale. The spring scale will read:
a)
0.2 N
b)
1 N
c)
1.96 N
d)
6.28 N
50.
A 3 kg mass hangs from a Newtons spring scale. The spring scale will read:
a)
0.32 N
b)
3 N
c)
29.4 N
d)
64.2 N
51.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
52.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
53.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
54.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
55.
When two surfaces rub, the irregularities of one surface get caught on those of the other surface?
a)
True
b)
False
56.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
57.

you can walk because there is friction between your __________ and ______________

a)

ground and air

b)

feet and ground

c)

feet and air

d)

air and ground

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