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G8 Forces and Motion

Total questions: 47

Worksheet time: 2hrs 40mins

Name
Class
Date
1.
An object at rest will stay at rest. An object in motion will stay in motion until a force makes it change its motion.
a)
Newton's Second Law
b)
Newton's Third Law
c)
Newton's First Law
2.
When an object is not moving a ______________ force is acting on it.
a)
Balanced
b)
Unbalanced
3.
For every action force there is an equal and opposite reaction force. This is Newton's ___________ of motion.
a)
2nd Law
b)
4th Law
c)
3rd Law
4.
In order to for something to start moving a(n) _______________ force is needed.
a)
balanced
b)
rebalanced
c)
unbalanced
5.
The more massive something is the more force is needed to move it is part of Newton's ___________ of motion.
a)
1st Law
b)
2nd Law
c)
3rd Law
6.
The formula for figuring out average speed is....
a)
Distance + Time
b)
Distance divided by time
c)
Time multiplied by Distance
d)
Distance - Time
7.
One way to reduce friction is to
a)
make a smooth surface
b)
make a surface rough
8.
If two teams have a tug-of-war and it ends in a tie, what forces are involved?
a)
Balanced forces
b)
Unbalanced forces
c)
Weight and gravity
d)
Friction and gravity
9.
Which observation BEST supports Newton's 2nd Law of Motion?
a)
It takes more force to move an elephant than it does to move a mouse
b)
An elephant will not move unless an outside force acts on it
c)
A mouse has less mass than an elephant
d)
Elephants are afraid of mice
10.
Which observation BEST supports Newton's First Law of Motion (the law of inertia)?
a)
A ball will bounce more if it is thrown harder
b)
Friction is a force that changes speed and direction of motion
c)
Gravity is a force that pulls objects toward the Earth
d)
Something that is not moving will remain still unless an outside force acts on it
11.
Which observation BEST supports Newton's 3rd Law of Motion?
a)
A ball will not move unless something pushes it
b)
A moving airplane will keep moving unless something stops it
c)
Force equals mass times acceleration
d)
The harder you throw a ball against a wall, the more it will bounce back
12.
The force of friction is caused by:
a)
surfaces rubbing against one another
b)
objects heating or cooling
c)
rough surfaces
d)
smooth surfaces
13.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
14.
On a distance vs. time graph, the steeper the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
15.

.....................are the pushes and pulls that affect motion.

a)

Forces

b)

Gravity

c)

Mass

d)

Air Resistance

16.

.....................is a force that pulls objects together. On Earth, it is a force that pulls all objects to Earth's center.

a)

Forces

b)

Air Resistance

c)

Gravity

d)

Mass

17.

..................is the amount of matter in an object

a)

Matter

b)

Mass

c)

Force

d)

Gravity

18.

Forces that are equal in size and opposite in direction are called...............

a)

balanced forces

b)

unbalanced forces

19.

Forces that are not equal in size and opposite in direction are called ....................

a)

unbalanced forced

b)

balanced forces

20.
In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the resultant force?
a)
50N to the left.
b)
350N to the left.
c)
350N to the right.
d)
50N to the right.
21.

What is the resultant force?

a)

40 N left

b)

0 N Balalnced

c)

400 N right

d)

40 N right

22.

What is the resultant/ net force?

a)

400 N Up

b)

400 N Down

c)

- 400 N Down

d)

800 N Down

23.
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
a)
60 N right
b)
10 N left
c)
60 n right
d)
50 N left
24.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
25.
What is the FORCE? 
a)
5 N
b)
10 N
c)
400 N
d)
0 N
26.
Which of the following is a force?
a)
Mass
b)
Gravity
c)
Weight
d)
Speed
27.
What is a unit for mass?
a)
kg
b)
N
c)
Lbs
d)
m/s/s
28.
Which is a unit for Force?
a)
Kg
b)
N
c)
m/s/s
d)
m/s
29.
What force typically opposes motion?
a)
Weight
b)
Normal
c)
Friction
d)
Resultant Force
30.
What is 'drag' another name for?
a)
dressing up
b)
air resistance
c)
friction
d)
weight
31.

Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?

a)

20 m/s2

b)

0.5 m/s2

c)

2 m/s2

d)

120 N

32.

Find how much force the man will need to exert to move the car.

a)

5000 N

b)

50 N

c)

20,000 N

d)

500 N

33.

A 25 kg bike accelerates at 10 m/s2. What was the force?

a)

250 N

b)

2.5 N

c)

25 N

d)

15 N

34.

If an object was accelerating at 5 m/s2, and a force of 10 newtons was required to accelerate it, what was the object's mass?

a)

50 kg

b)

2 kg

c)

0.5 kg

d)

5 kg

35.

The weight of a 2-kilogram bag of grapes is

a)

about 10N

b)

about 20N

c)

about 30N

d)

more than 30N

36.

If you pull horizontally on a 50-kg crate with a force of 500 N, and the friction force on the crate is 250 N, acceleration of the crate is

a)

zero

b)

2 m/s2

c)

4 m/s2

d)

5 m/s2

37.
a)
1st
b)
2nd
c)
3rd
d)
law of motion
38.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
39.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia (1st law)
b)
The Law of Acceleration (2nd law)
c)
The Law of Conservation of Momentum
d)
Action Reaction Law (3rd law)
40.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
41.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced 
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
42.
Will it take more force to push an empty shopping cart or a shopping cart that is full?
a)
The empty shopping cart
b)
The full shopping cart
c)
They will take the same amount of force
43.

Which wagon will require more force to move?

a)

Top wagon, because it has more weight.

b)

Top wagon, because it has more mass.

c)

Bottom wagon, because it has more weight.

d)

Bottom wagon, because it has more mass.

44.

A cat has a mass of 200 kg and accelerates at 3 m/s2 to catch a mouse. How much force would be needed to stop the cat?

a)

200 N

b)

300 N

c)

500 N

d)

600 N

45.

An object of mass 30 kg experiences a force of 60 newtons. Calculate the acceleration.

a)

180 m/s2

b)

90 m/s2

c)

20 m/s2

d)

2 m/s2

46.

Calculate the missing information.

a)

5 m/s2

b)

8 m/s2

c)

12 m/s2

d)

20 m/s2

47.

Which would require more force to place in your shopping car?

a)

Both

b)

Pineapple

c)

Watermelon

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