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Newton's 2nd & Momentum Review

Total questions: 52

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
What is the equation for Newton's 2nd law?
a)
a = bc
b)
F = m/a
c)
F = ma
d)
a = b/c
2.

What are the units of force?

a)

kg

b)

N

c)

m/s

d)

m/s2

3.
When mass is 10 kg, acceleration is 2 m/s/s, what is force?
F = ma
a)
5 N
b)
20 N
c)
8 N
d)
12 N
4.
The larger the mass you have the _____ force you need to change its motion.
a)
more
b)
less
5.
As force applied to a textbook increases, what happens to its acceleration?
a)
Stays the same
b)
Increases
c)
Decreases
d)
Opens
6.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
7.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
8.
True or False.  An increase in mass will result in an increase in the acceleration?
a)
True
b)
False
9.
The force of a cart doubles.  What happens to the cart's acceleration?
a)
It doubles
b)
It quadruples 
c)
It halves
d)
It quarters
10.
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
11.
A student leaves a pencil on a desk and it stays there until I pick it up. 
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
12.
Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
13.
My cat eyeballs the christmas tree and decides to apply all of his mass directly to the center of the tree. This force causes the tree to accelerate down towards the ground.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
14.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
15.
What two quantities must I know to calculate something's speed?
a)
time and weight
b)
position and distance
c)
distance and time
d)
distance and speed
16.
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)
100kg 
b)
1,250kg
c)
50kg
d)
5kg
17.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
18.

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

a)

balanced

b)

unbalanced

19.
Something with a greater mass requires a(n) _____ force to move it. 
a)
greater
b)
lesser
c)
equal
d)
opposite
20.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
21.

The equation to calculate momentum is

a)

p = m x v

b)

p = 1/2 m x v2

c)

p = m x g x h

d)

p = m x g

22.
Determine the momentum of 1000-kg car moving southward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s south
d)
10000 kg * m/s south
23.

What is the unit for momentum?

a)

m/sec

b)

kg/sec

c)

kg/m

d)

kg x m/sec

24.

What is the unit for velocity?

a)

m/sec

b)

kg/sec

c)

kg/m

d)

kg x m/sec

25.
What is the unit for mass?
a)
m/sec
b)
kg/sec
c)
kg
d)
kg m/sec
26.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
27.

Which of the following has the MOST momentum? (they are all rolling at the same velocity)

a)

rolling ping-pong ball

b)

rolling bowling ball

c)

rolling soccer ball

d)

rolling basketball

28.

If an object has a momentum of 40 kg x m/s and a mass of 60 kg, what is it's velocity?

a)

2400 m/s

b)

1.5 m/s

c)

240 m/s

d)

.67 m/s

29.

In order for an object to have momentum it must be ________

a)

moving

b)

motionless

c)

alive

d)

asleep

30.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
31.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
32.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
33.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
34.
The impulse is ______ the change in momentum
a)
Greater than
b)
Equal to
c)
less than
d)
always double
35.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
36.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
37.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
38.
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.
39.
Which of the following has the least amount of momentum?
a)
An ant walking along the ground
b)
An ant at rest
c)
An elephant walking
d)
An elephant running
40.
What is the unit for velocity?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
41.
What is the unit for mass?
a)
m/sec
b)
kg/sec
c)
kg
d)
kg m/sec
42.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
43.
Determine the momentum of 1000-kg car moving northward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
44.

Match the following units to what they measure.

a)

Force

1.

Newtons (N)

b)

Mass

2.

Kilograms (kg)

c)

Acceleration

3.

Meters per second squared (m/s2)

45.

Mr. Austin pushes a box to the right with a force of 200 N. There's 50 N of friction.

The net force is ​ (a)   to the ​ (b)   .

Choose from the below words
150 N
right
250 N
4 N
left
46.

Match the equations to what they're used to calculate.

a)

F=m⋅aF=m\cdot a

1.

Force

b)

m=Fam=\frac{F}{a}

2.

Mass

c)

a=Fma=\frac{F}{m}

3.

Acceleration

47.

Mr. Austin pushes a box to the right with a force of 200 N. There's 250 N of friction.

The net force is ​ (a)   to the ​ (b)   .

Choose from the below words
50 N
left
450 N
right
48.

F = 100 N

m = 10 kg

a = ?

49.

F = ?

m = 5 kg

a = 3 m/s2

50.

F = 25 N

m = ? kg

a = 5 m/s2

51.

There is a 1,000 kg car speeding up with an acceleration of 3 m/s2.

What is the force acting on the car?

52.

A 250 N force on a box causes it to accelerate with an acceleration of 5 m/s2.

What is the mass of the box?

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