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Newton's second law F=ma Summative

Total questions: 23

Worksheet time: 2hrs 45mins

Name
Class
Date
1.

An object of mass 10 kg is accelerated upward at 2 m/s2. What force is required?

a)

20 N

b)

2 N

c)

5 N

d)

0 N

2.

F= mass * acceleration

A 20 Kg bike accelerates at 10 m/s2. what is the force acting upon it?

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

3.

What Unit do we Measure Force in?

a)

Newtons

b)

Joules

c)

Volts

d)

Lumens

4.

An object accelerates 5 m/s2 when a force of 20 newtons is applied to it. What is the mass of the object?

a)

4 kg

b)

20 kg

c)

0.5 kg

d)

2 kg

5.

An object with a mass of 6.0 Kg accelerates 4.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

a)

240 N

b)

24 N

c)

2.4 N

d)

0.24 N

6.

According to Newton's second Law, which would take more force to slow down?

a)

The silver car

b)

The green car

c)

They would both take the same force

7.

An object accelerates 8 m/s2 when a force of 40 newtons is applied to it. What is the mass of the object?

a)

4 kg

b)

20 kg

c)

5 kg

d)

0.2 kg

8.
If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?
a)
10 m/s^2
b)
.1 m/s^2
c)
100 m/s^2
d)
1 m/s^2
9.
What happens when unbalanced forces act on an object at rest?
a)
the object remains at rest
b)
the object begins moving in an unpredictable direction
c)
the object begins moving in the direction of the net force
d)
the object begins moving opposite to the direction of net force
10.
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
a)
The one with a mass of .78 kg will have the greatest acceleration.
b)
The one with a mass of .52 kg will have the greatest acceleration.
c)
They will both accelerate at the same rate.
11.

F=MA

Going down a hill a 12000g sled has a force of 36 N. What is it's acceleration?

a)

432000 m/s2

b)

3 m/s2

c)

432 m/s2

d)

0.0033 m/s2

12.

What is the unit for acceleration?

a)

m/s^2

b)

m/s

c)

Newtons

d)

grams

13.

When force is 20 N, mass is 5 kg, what is acceleration?

a)

25 m/s/s

b)

5 m/s/s

c)

100 m/s/s

d)

4 m/s/s

14.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
15.

The masses of four objects are given in this table. If all objects are struck with the same amount of force, which one will have the least acceleration?

a)

Object 1

b)

Object 2

c)

Object 3

d)

Object 4

16.

A basketball with a mass of 600g is accelerated with a force of 5.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?

a)

0.0096m/s2

b)

17 m/s2

c)

18 m/s2

d)

9.6 m/s2

17.
A change in velocity over time is called ___________.
a)
speed
b)
force
c)
acceleration
d)
direction
18.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
19.
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
a)
Skater 1 experiences a greater change in momentum
b)
Skater 2 experiences a greater change in momentum
c)
Skater 1 has a greater velocity than Skater 2
d)
Skater 1 experiences a greater force
20.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
21.
A _______ is a push or pull.
a)
Newton
b)
Acceleration
c)
Momentum
d)
Force
22.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
23.
 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
26.75 kg
b)
63.69 kg 
c)
263.3 kg 
d)
1123.5 kg

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