WorksheetsMomentum & Impulse
Total questions: 50
Worksheet time: 56mins
Name
Class
Date
1.
What is the formula for calculating momentum?
a)
m=mv
b)
p=m/v
c)
p=v/m
d)
p=vm
2.
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
3.
When a bat collides with a baseball, the momentum of the bat
a)
transfers to the momentum of the ball
b)
transfers from the momentum of the ball
c)
does not transfer from the bat to the ball
d)
does not transfer from the ball to the bat
4.
If two objects collide and stick together, what will happen to their overall momentum?
a)
momentum will decrease
b)
momentum will increase
c)
momentum will stay the same
d)
none of the above
5.
If 2 objects collide and stick together, what will happen to their velocities?
a)
velocities will increase
b)
velocities will decrease
c)
velocities will stay the same
d)
none of the above
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.
If an action force is a golf club hitting a golf ball, then the reaction force is
a)
exerted on the golf ball
b)
exerted on the golf cart
c)
exerted on the golf club by the golf ball
d)
exerted by the squirrel that is hiding in the tree
8.
How much momentum does a 50 kg mass moving at 10 m/s have?
a)
5 kg m/s
b)
500 kg m/s
c)
5 N
d)
500 N
9.
The units for momentum are
a)
kg
b)
m/s
c)
kg-m/s
d)
kg/m/s
10.
The law of conservation of momentum states that,
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
11.
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
12.
The definition of momentum is
a)
The size of an object
b)
The velocity of an object
c)
Mass in Motion
d)
A comparison between two objects
13.
True or False: Weight is a Force
a)
true
b)
False
14.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
15.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
16.
A(n) _________________ causes and is equal to a change in momentum
a)
impulse
b)
force
c)
joule
d)
watt
17.
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
18.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
19.
Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:
a)
2 m/s
b)
3.4 m/s
c)
4.6 m/s
d)
7.1 m/s
20.
A Falling Object has what kind of energy?
a)
Kinetic Energy
b)
Potential Energy
c)
Kinetic Energy and Potential Energy
d)
Neither
21.
What does "g" stand for?
a)
Gravity
b)
The Acceleration due to gravity
c)
How much force gravity has
22.
How much momentum does a stationary battle ship have if it has a mass of 2,575,000 kg?
a)
2,575,000 N
b)
2,575,000 kg m/s
c)
0 Momentum requires mass and velocity
d)
none of the above
23.
Momentum is a property of.....?
a)
velocity
b)
moving objects
c)
non-moving objects
24.
T/F: During a collision, one object will gain momentum and the second object will lose the same amount of momentum gained by the first object.
a)
True
b)
False
25.
T/F: Two objects that collide will have the same magnitude of impulse.
a)
True
b)
False
26.
T/F: Impulse is a force.
a)
True
b)
False
27.
T/F: A big truck will always have more momentum than a small car.
a)
True
b)
False
28.
An axe is used to strike a tree. Compared with the time the axe acts on the tree...
a)
the tree acts for less time on the axe.
b)
the tree acts for more time on the axe.
c)
the tree acts for the same amount of time on the axe.
29.
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.
30.
Paul is riding a motorbike while wearing a helmet with a face shield. A beetle hits Paul's face shield while Paul is moving at 30 mph. Which undergoes the greater change in momentum?
a)
Paul
b)
Beetle
c)
both are the same
31.
Paul is riding a motorbike while wearing a helmet with a face shield. A beetle hits Paul's face shield while Paul is moving at 30 mph. Which undergoes the greater impulse?
a)
Paul
b)
Beetle
c)
both are the same
32.
Paul is riding a motorbike while wearing a helmet with a face shield. A beetle hits Paul's face shield while Paul is moving at 30 mph. Which undergoes the greater acceleration?
a)
Paul
b)
Beetle
c)
both are the same
33.
In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other. The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s. The carts stick together when they collide. Calculate their final speed.
a)
0.5 m/s
b)
1.0 m/s
c)
0.33 m/s
d)
0.67 m/s
34.
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.
a)
-2.5
.
.
.
.
b)
-10
c)
-18
d)
-45
35.
Which has the greater change in momentum? An object that stops in a collision or the same object that bounces (rebounds) in a collision. Assume the object has the same speed and time of contact.
a)
Stops
b)
Bounces
c)
Both are the same
36.
When is momentum conserved in a collision?
a)
When the collision is inelastic.
b)
When the collision is elastic.
c)
When the collision is inelastic OR elastic but never an explosion.
d)
All collisions.
37.
Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse?
a)
Cart B
b)
Cart A
c)
they are the same
38.
A 1kg kick ball flying at 10m/s hits a wall and bounces off at 8m/s. What is the impulse?
a)
2 kgm/s
b)
18 kgm/s
c)
19 kgm/s
d)
20 kgm/s
39.
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
40.
A force acts on an object for a given time. If the same force is allowed to act on the same object for a longer time, the impulse will be
a)
smaller
b)
greater
c)
the same
41.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
42.
It is beneficial for bungee jumpers to use elastic cords vs. stiff cords because
a)
it increases time
b)
it increases force
c)
there is no benefit
43.
The purpose of air bags 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.
44.
Why should you follow through when playing tennis?
a)
To increase the amount of force applied
b)
To increase the amount of time the force is applied
c)
To keep the impulse constant
d)
To minimize the change in velocity
45.
Identical cell phones are dropped onto two different surfaces. One phone takes 1 second to stop. Another phone takes 2 seconds to stop. What happens to the force for the 2 second stop?
a)
Force is 1/2 as big
b)
Force doubles
c)
Force stays the same
d)
Force is 1/4 as big
46.
An egg is thrown at a wall and at a bed sheet. The force of impact will be
a)
Greater against the wall
b)
Greater against the sheet
c)
Force is equal
47.
The formula for Impulse is
a)
mass multiplied by time
b)
mass multiplied by time
c)
Force multiplied bymass
d)
Force multiplied by time
48.
Energy is lost during this type of collision
a)
elastic
b)
inelastic
c)
energy is lost in both types of collisions
49.
Which two quantities can be expressed using the same units?
a)
momentum and energy
b)
energy and force
c)
impulse and force
d)
impulse and momentum
50.
A(n) _________________ causes and is equal to a change
in momentum
a)
impulse
b)
force
c)
joule
d)
watt
100 %
