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Newton's Review

Total questions: 40

Worksheet time: 41mins

Name
Class
Date
1.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
2.
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
3.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
4.
Force pair that has a net force of zero.
a)
Balanced force
b)
Unbalanced force
5.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
6.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
7.
What is the magnitude (size) and direction of the net force?
a)
15 N to the left
b)
15 N to the right
c)
1 N to the left
d)
1 N to the right
8.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
9.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
10.
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
11.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
12.
A force that results from two objects rubbing past each other.
a)
Gravity
b)
Friction
c)
Inertia
d)
Force
13.
The force that pulls objects towards Earth.
a)
Gravity
b)
Friction
c)
Inertia
d)
Force
14.
What is Force?
a)
A Push
b)
A Pull
c)
Jumping
d)
Either a push or pull
15.
 What is the unit called that measures force?
a)
Isaac
b)
Yee
c)
Newton
d)
kilogram
16.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
17.

If the net force is equal to zero, the forces acting on the object are

a)

balanced

b)

unbalanced

18.

___________ is a measure of the amount of matter in an object.

a)

gravity

b)

force

c)

mass

19.

When an object is moving, friction acts in the _______ direction as the motion.

a)

perpendicular

b)

same

c)

opposite

d)

precise

20.

What effect would decreasing the normal force between two objects have on the force of friction?

a)

The force of friction would increase.

b)

The force of friction would decrease.

c)

The force of friction would remain the same.

d)

The force of friction would disappear completely.

21.
Multiplying the mass and acceleration of an object would give you:
a)
the force of gravity
b)
the force of friction
c)
the velocity
d)
the net force
22.
Which of the following is always true?
a)
Fnet = ma
b)
Fnet = m + a
c)
Fnet = m - a
d)
Fnet = m/a
23.

We often say that g = -10 m/s2. The lowercase g represents:

a)
the speed of gravity
b)
the velocity of gravity
c)
the acceleration of gravity
d)
the force of gravity
24.
An object has a mass of 10 kg. What is its weight?
a)

0.1 kg

b)

0.1 N

c)

100 kg

d)

100 N

25.
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
26.
An unbalanced force causes:
a)
change in mass
b)
acceleration
c)
balanced forces
d)
change in time
27.
Gravity pulls an object down with 49 N of force and a rope pulls the object up with 50 N of force. What is the net force?
a)
1 N upward
b)
1 N downward
c)
0.98 N upward
d)
0.98 N downward
28.
A book rests on a table. The normal force points:
a)
Up
b)
Down
c)
Left
d)
Right
29.
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
30.
The air resistance and weight as shown for the skydiver are balanced. The skydiver is probably:
a)
at rest
b)
moving at constant velocity
c)
accelerating upward
d)
accelerating downward
31.
To find an object's weight on Earth, multiply the mass by:
a)
1.6 m/s2
b)
10 N
c)

10 m/s2

d)
3.14
32.

Two forces on an object are in opposite directions. How do we calculate the resultant force?

a)

Divide one by the other

b)

Multiply them

c)

Subtract one from the other

d)

Add them together

33.

What is the attraction between two objects because of their mass?

a)

Friction

b)

Gravity

c)

Upthrust

d)

Weight

34.

How will this object move?

a)

It won't move.

b)

It will move to the right.

c)

It will move to the left.

35.

What is the resultant force?

a)

17 N, Left

b)

6N, Right

c)

None of the above

36.

What is the resultant force?

a)

40N, Left

b)

40N, Right

c)

0N, Balanced

d)

75N, Right

37.
A toy car was used in an investigation about forces. During which of the following scenarios was the car experiencing balanced forces?
a)
The toy car speeds up as it rolls down a ramp.
b)
The toy car travels forward at a constant speed.
c)
The toy car slows down as it rolls up a hill.
d)
The toy car changes direction at a constant speed.
38.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
39.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
40.
What is the net force?
a)
3 N left
b)
3 N right
c)
7 N left
d)
7 N right

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