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MATRICULATION EP015 3: MOMENTUM & IMPULSE

Total questions: 20

Worksheet time: 32mins

Name
Class
Date
1.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
2.

An object that has momentum can be described as _________

a)

a) changing its velocity

b)

b) moving fast

c)

c) resisting changes in its state of motion

d)

d) having its mass in motion

e)

e) encountering a net force

3.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and velocity
d)
mass and energy
4.
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
5.
Which of the following has the smallest amount of momentum?
a)
A semi-truck traveling at highway speeds
b)
A college track athlete running a race
c)
A baby crawling on the floor
d)
A student sitting at a desk
6.
Which takes more force  to catch, a bowling ball or a ping pong ball?
a)
bowling ball because it has more momentum
b)
ping pong ball because it has more momentum
c)
both require the same amount of force when catching
d)
bowling ball because it has less momentum
7.
A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?
a)
74.4 kg
b)
6030 kg
c)
0.0134 kg
d)
80 kg
8.

An impulse is equivalent to

a)

the change in volume of an object

b)

the change in volume of an object

c)

a force applied to an object for a period of time

d)

the original momentum of the object

9.
The symbol for impulse is 
a)
m
b)
p
c)
v
d)
J
10.

The units for Impulse are

a)

kg

b)

NsN\cdot s

c)

N

d)

m/s

e)

kgmskg\cdot\frac{m}{s}

11.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
12.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
13.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
14.
a)

gradient ABC

b)

gradient AB

c)

Area above ABC

d)

Area under ABC

15.
A force acted upon an object for 3 s as shown in the graph below.
What is the magnitude of the impulse on the object?
a)
3
b)
4.5
c)
6
d)
9
16.

An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact

a)

impulse, time

b)

impulse, force

c)

force, time

d)

time, force

17.

Is momentum a quantity that can be conserved?

a)

Yes

b)

No

18.
The law of conservation of momentum states that, 
a)
p before is less than the p after
b)
p before is the same as the p after
c)
p before is more than the p after
19.

According to the conservation of momentum, the momentum before a collision should be ________ momentum after a collision.

a)

twice the original momentum of the object's

b)

greater than the

c)

the same as the

d)

less than the

20.
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