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Ch 6 Review - Newton's 2nd Law

Total questions: 60

Worksheet time: 51mins

Name
Class
Date
1.

What is Newton's 2nd Law?

a)

An object at rest will stay at rest, and object in motion will stay in motion

b)

for every action, there is an equal and opposite reaction

c)

acceleration is produced when a force acts on a mass

2.

According to Newton's 2nd Law, the greater the ____ of an object, the more force you will need to move it.

a)

surface

b)

force

c)

mass

3.
What is the relationship between mass and acceleration?
a)
directly proportional
b)
they are not related
c)
inversely proportional 
d)
none of the above
4.

Football A has a greater mass than football B. Which football will have greater acceleration when both are thrown with the same force in the same direction?

a)

Football A

b)

Football B

c)

They will have the same acceleration

d)

Mass has no effect on acceleration

5.
What is the acceleration of an object traveling at a constant velocity?
a)
10 m/s2
b)
0 m/s2
c)
250 m/s2
d)
20 m/s2
6.
What are the appropriate units to describe acceleration?
a)
m/s
b)

m/s/s

c)
cm
d)
there are no units associated with acceleration
7.

How can Newton's second law be represented mathematically?

a)

F=ma

b)

m= F/a

c)

a= F/m

d)

All are correct

8.

What is the force on a baseball that has a mass of 142 kg and an acceleration of 30 m/s/s?

a)

0 N

b)

236 N

c)

4260 N

d)

4.7 N

9.
Your car has a mass of 2500 kg and a force of 5000 N.  How fast will it accelerate?
a)
20 m/s2
b)
2 m/s2
c)
0.5 m/s2
d)
120 N 
10.

Bronco is a skydiver. His mass is 100 kg. What is his approximate weight in Newtons?

a)

1N

b)

10N

c)

100 N

d)

1000 N

11.
True or False.  Acceleration of an object is directly proportional to the net force acting on it? 
a)
True
b)
False
12.

True or False. An increase in mass will result in an increase in the acceleration?

a)

True

b)

False

13.
The acceleration produced by a net force on an object is
a)
directly proportional to the magnitude of the net force
b)
in the same direction as the net force
c)
inversely proportional to the mass of the object
d)
all of the above
14.

The force on a cart doubles. What happens to the cart's acceleration?

a)

It doubles

b)

It quadruples

c)

It halves

d)

It quarters

15.

The unit of force is

a)

m/s

b)

m/s2

c)

newtons

d)

kg

16.

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s2?

a)

102.04 N

b)

9,800 N

c)

980 N

d)

300 N

17.

What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

a)

100 m/s2

b)

25,000 m/s2

c)

10 m/s2

d)

25 m/s2

18.

A 50 kg skater pushed by a friend accelerates 5 m/s2. How much force did the friend apply?

a)

45 N

b)

15 N

c)

10 N

d)

250 N

19.

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2. What is the mass of the object?

a)

100 kg

b)

1,250 kg

c)

50 kg

d)

5 kg

20.

Determine the accelerations that result when a 12-N net force is applied to a 3-kg object and then to a 6-kg object.

a)

A 3-kg object experiences an acceleration of 2 m/s/s. A 6-kg object experiences an acceleration of 2m/s/s.

b)

A 3-kg object experiences an acceleration of 4 m/s/s. A 6-kg object experiences an acceleration of 2 m/s/s.

c)

A 3-kg object experiences an acceleration of 2 m/s/s. A 6-kg object experiences an acceleration of 4 m/s/s.

d)

A 3-kg object experiences an acceleration of 4 m/s/s. A 6-kg object experiences an acceleration of 4 m/s/s.

21.

You give a shopping cart a shove down the isle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3 m/s2. How much force did you exert on the cart?

a)

6 N

b)

54 N

c)

21 N

d)

18 N

22.

A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/s/s. What is it's force?

a)

50 Newtons

b)

5 Newtons

c)

20 Newtons

d)

9.5 Newtons

23.

A force of 90N is applied to each cart below, which one will accelerate the fastest?

a)

Cart 1

b)

Cart 2

c)

Cart 3

d)

Cart 4

24.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
25.
How much force is needed to accelerate a 3kg skateboard at 5m/s2. 
a)
8N
b)
1.6N
c)
0.6N
d)
15N
26.
How much force is needed to accelerate a 25kg bowling ball at 2m/s2
a)
50N
b)
5N
c)
12.5N
d)
100N
27.
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
28.

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

a)

balanced

b)

unbalanced

29.
Something with a greater mass requires a(n) _____ force to move it. 
a)
greater
b)
lesser
c)
equal
d)
opposite
30.
unit for mass (in all physics equations)
a)
kg
b)
N
c)
pound
d)
g
31.
unit for weight (in all physics equations)
a)
N
b)
kg
c)
pound
32.
unit for normal force (in all physics equations)
a)
N
b)
kg
c)
pound
33.

If mass = 78.9 kg, weight on Earth =

a)

773 N

b)

77.3 N

c)

8 N

d)

774 kg

34.

If mass = 60 kg, weight on Earth =

a)

6.1 N

b)

60 N

c)

588 N

d)

598 N

35.
If mass = 1.6 kg, weight on Earth = 
a)
0.16 N
b)
15.7 kg
c)
15.7 N
d)
157 N
36.
If weight on Earth = 20.0 N, mass =
a)
2.04 kg
b)
196 kg
c)
10 kg
d)
2.20 kg
37.

If weight on Earth = 54 N, mass =

a)

530 kg

b)

5.5 kg

c)

54 kg

d)

5.05 kg

38.

If weight on Earth = 4.8 N, mass =

a)

32 kg

b)

0.49 kg

c)

47 kg

d)

0.49 N

39.
The weight of a car on a horizontal road is 23,000 N.  What is the normal force on the car?
a)
23,000 N
b)
2345 N
c)
226,000 N
d)
2345 kg
40.
The mass of a book on a table is 1.2 kg.  The normal force on the book is
a)
0.12 N
b)
1.2 kg
c)
1.2 N
d)
11.8 N
41.
kg
a)
unit for mass
b)
unit for weight
42.
Newton
a)
unit for mass
b)
unit for weight
43.
What is the definition of "weight"?
a)
measure of the force of gravity on your body
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
44.
A measure of how much matter an object has is--
a)
weight
b)
gravity
c)
mass
d)
volume
45.

The weight of an object _________ as it moves away from the center of Earth.

a)

increases

b)

stays the same

c)

triples

d)

decreases

46.
The mass of an object ___________ as it moves away from the center of Earth
a)
stays the same
b)
decreases
c)
increases
d)
doubles
47.

On which would you weigh the most?

a)

Earth

b)

Jupiter

c)

Venus

d)

You would weigh the same on all

48.

On which would your mass be the greatest?

a)

Earth

b)

Jupiter

c)

Venus

d)

Your mass doesn't change

49.
If an object has more mass, then it will
a)
weigh more.
b)
weigh less.
c)
weigh the same as an object with less mass.
d)
always have more volume than an object with less mass.
50.

Why would you weigh less on the moon compared to Earth?

a)

less air

b)

less sunlight

c)

more gravitational pull on the moon

d)

less gravitational pull on the moon

51.

The amount of matter in an object

a)

Weight

b)

Mass

c)

Volume

d)

Circumference

52.

The one that stays the same no matter where you are.

a)

Bass

b)

Weight

c)

Mass

d)

Weather

53.

The one that is affected by gravity.

a)

Volume

b)

Mass

c)

Weight

d)

Ego

54.

The unit that goes with weight.

a)

Kilogram

b)

Newton

c)

Milliliter

d)

Mile

55.

Your weight is lower on the moon than on Earth.

a)

True

b)

False

56.
Convert:
3 kg = ______ g 
a)
3
b)
30
c)
300
d)
3,000
57.
If you traveled from Earth to the moon, your _______ would change
a)
Weight
b)
Mass
c)
Volume
d)
Kilogram
58.
If you traveled from Earth to the moon, your _______ would NOT change
a)
Weight
b)
Mass
c)
Gravity
59.

6.25 kg --> ____N

a)

625, 000 N

b)

6250 N

c)

625 N

d)

62.5 N

60.

1500 N --> _____ kg

a)

150 kg

b)

15 kg

c)

1.5 kg

d)

0.15 kg