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Motion Laws Concepts

Total questions: 26

Worksheet time: 23mins

Name
Class
Date
1.

All the laws apply, but.... Hitting a baseball with a bat, causing ball to be hurled outward, is a good example of ____.

a)

Law of Inertia (1st Law)

b)

Law of Mass and Acceleration (2nd law)

c)

Law of Action and reaction or Newton's 3rd Law)

2.

F=MA

An object of mass 20 kg is accelerated upward at 4 m/s2. What net force is required?

a)

80 N

b)

5 N

c)

16N

d)

0.2 N

3.

Which is a unit of mass or inertia?

a)

mph

b)

m/s2

c)

kg-m/s2

d)

kilogram, kg

4.
Unbalanced forces are present when
a)
there is a   zero net force
b)
velocity does not change
c)
an object accelerates
d)
an object is at rest
5.
The ____ of an object is the gravitational force exerted on an object.
a)
mass
b)
weight
c)
gravity
d)
newtons
6.
The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.
a)
gravity
b)
friction
c)
a strong force
d)
electromagnetic force
7.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
8.

A cannonball with a mass of 0.5 kg is fired with an acceleration of 10 m/sec/sec. What net force was applied to ball?

a)

50 Newtons

b)

5 Newtons

c)

20 Newtons

d)

9.5 Newtons

9.
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
a)
20N 
b)
40N 
c)
10N 
d)
70N
10.

Which has more Inertia?

a)

Truck

b)

Ant

c)

A cat

d)

A skateboard

11.

If the mass of an object is 1000-kg on Earth, what is it's mass on the moon?

a)

10 kg

b)

100 kg

c)

1000 kg

d)

10,000 kg

12.

What is the net force on the box?

a)

10 N

b)

0 N

c)

25 N

d)

1 N

13.

What is the net force on the box?

a)

400 N Up

b)

400 N Down

c)

800 N Up

d)

800 N Down

e)

12000 N Down

14.
If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a)
2 m/s2
b)
4 m/s2
c)
16 m/s2
d)
10 m/s2
15.

What is the mass of a stone which accelerates at a rate of 2 m/s2 when a force of 12 newtons is placed on it?

a)

6 kilograms

b)

14 kilograms

c)

10 kilograms

d)

24 kilograms

16.

If an object mass =30 Kg on the Earth, what would be it's weight on Earth?

a)

30 N

b)

300 kg

c)

3000N

d)

294 N

17.

Other than the English unit of weight, the pound, the common metric unit of weight is

a)

Kg

b)

N

c)

m/s

d)

Kg m/s

18.
A Newton is a unit of...
a)
force
b)
inertia
c)
acceleration
d)
velocity
19.

The law of inertia applies to

a)

moving objects

b)

non-moving objects

c)

moving and non-moving objects

20.
If force remains constant, what happens to acceleration if mass is decreased?
a)
Acceleration decreases.
b)
Acceleration increases.
c)
Acceleration remains constant.
21.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
there is no such thing as force
22.
A crumpled piece of paper hits the ground before a flat sheet of paper because
a)
the acceleration of gravity is greater on the  crumpled paper.
b)
there is more air resistance against the flat paper.
c)
the crumpled paper is more massive
d)
the crumpled paper is less massive.
23.

An object moving at constant velocity on earth has

a)

a positive net force on it.

b)

a negative net force on it.

c)

no friction acting on it.

d)

no net force acting on it.

24.

For an object to slide at constant velocity across the floor,

a)

the applied force must be equal to the friction force.

b)

the must not be any friction present.

c)

you must cause it to accelerate constantly.

d)

the applied force must be greater than friction force.

25.

Doubling the mass of an object _____ the acceleration of the object, provided the force does not change.

a)

doubles

b)

halves

c)

quadruples

d)

does not change

26.

If you know weight of an object, how do you get the mass?

a)

g / W

b)

g x W

c)

W x g

d)

W / g