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Quiz #2 - 1st Law of Motion - Inertia

Total questions: 30

Worksheet time: 45mins

Name
Class
Date
1.

Newton's 1st Law is also called the Law of ...

a)

Friction

b)

Inertia

c)

Unbalanced forces

d)

Newtons

2.
The tendency of an object to resist a change in motion is...
a)
inertia
b)
kinetic energy
c)
vector
d)
net force
3.
The law of inertia (Newton’s First Law) applies
a)
to both moving and nonmoving objects
b)
only to moving objects
c)
only to objects that are not moving
4.

Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.

a)

at rest

b)

moving

c)

in one spot

d)

inertia

5.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
6.
You push on a car and it does not move.  What is true about the inertia?
a)
The inertia is changing
b)
The inertia of the car is too great 
c)
The inertia of the person is equal to the car
d)
There is not inertia because of no movement
7.
Why is the net force 0 in the image?
a)
Because the elephants are the same size
b)
Because they are both pulling the same amount of force in opposite directions
c)
Because they are elephants
d)
Because they are pulling away from each other.
8.
What is the net force?
a)
5 N
b)
45 N to the left
c)
5 N to the right
d)
45 N to the right
9.

Which of the following is the best example of Newton's First Law of Motion?

a)

Jessica's body flies forward after she hits the brakes

b)

Jessica drives a car

c)

Jessica is at a road crossing

d)

Jessica is sleeping

10.
If I slowly roll a ball down the hallway, why does it eventually stop?
a)
Because of Newton's First Law
b)
Friction and Air Resistance
c)
Inertia
d)
It wouldn't stop, it would keep going until it hits a wwall.
11.
What is the net force of this object? 
a)
10 N, no direction
b)
10 N left
c)
5 N right
d)
0 N no direction
12.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
13.
friction is a force that acts 
a)
in the same direction as the motion
b)
opposite to the direction of the motion
c)
opposite to the applied forces
d)
the same direction as the applied force
14.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 
a)
velocity
b)
gravity
c)
net force
d)
distance
15.
What is the unit of measurement for force?
a)
kilograms
b)
newtons
c)
grams
d)
newt
16.

Which of these are examples of Newton's First Law:

1. A stationary object with no outside force will not move

2. An astronaut who has their screwdriver knocked into space will see the screwdriver continue on at the same speed and direction forever

3. If you use the same force to push a truck and a car, the car will have more acceleration than the truck because the car has less mass

4. An object at rest stays at rest

a)

1,3,4

b)

1,2,4

c)

2,3,4

d)

1,2,3

17.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
18.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
19.

What will happen to an object if it is put into motion in space?

a)

It will stop eventually due to friction.

b)

It will continue to move until it is acted on by an unbalanced force.

c)

It will speed up over time.

d)

It will slow down over time.

20.

You push a sofa, but you can’t get it to move by yourself. Why?

a)

You have more inertia than the sofa.

b)

There is no inertia because the sofa is not moving.

c)

Your force is stronger than the friction between the sofa and the floor.

d)

The sofa’s inertia is greater than your applied force.

21.

Which one has the LEAST inertia?

a)
b)
c)
d)
22.

How is she able to maintain this position?

a)

The force of the water is equal to the force of gravity

b)

The force of the water is not equal to the force of gravity

23.

__________________ is when the speed of an object increases over time

a)

Friction

b)

Mass

c)

Acceleration

d)

Inertia

24.

A place or object used for comparison to determine if another object is in motion is called a

a)

comparison point

b)

reference point

c)

point of view

d)

motion detector

25.
A change in an object's position is called ______.
a)
Speed
b)
Motion
c)
Velocity
d)
Friction
26.

Which explains why the tablecloth trick works?

a)

The dishes are stuck in place due to air resistance.

b)

The tablecloth is an ilusion.

c)

The dishes have inertia, and therefore stay on the table.

d)

magic

27.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
28.
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.
29.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
30.
Which of the blocks above has balanced forces acting on it?
a)
A
b)
B
c)
C
d)
D

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