WorksheetsREVIEW: momentum and impulse
Total questions: 55
Worksheet time: 2hrs 53mins
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
Momentum before = Momentum after
according to the Law of Conservation of _______________.
Momentum
Energy
Force
Acceleration
Two Pool Balls collide and then go separate directions.
inelastic collision
explosion
elastic collision
none of these
Collision where objects collide, and stick together.
inelastic collision
explosion
elastic collision
none of these
For every action, there is an equal and opposite reaction.
Newton's 1st Law
Newton's 3rd Law
Newton's 2nd Law
Law of Momentum
Which TWO variables determine the MOMENTUM for an object?
time
density
velocity
mass
A trampoline increases __________________, which in turn decreases _____________________.
force / time
time / force
mass / weight
acceleration / velocity
Action: Your foot applies a downward force onto the floor.
Reaction?
Your foot pushes through the floor.
The floor applies an equal and opposite force upward on your foot.
Your foot bounces off of the floor.
The floor collapses.
A car has 10,800 kg m/s of momentum as it collides with a trash dumpster AT REST. How much TOTAL MOMENTUM will the car and dumpster have after collision?
Less than 10,800 Kg x m/s
More than 10,800 Kg x m/s
The same. 10,800 Kg x m/s
Not enough information.
An insect applies 1.5 N of force to a windshield of a moving car. How much force does the windshield apply to the insect?
15,000 N
0.5 N
1.5 N
Not enough information
What is the TOTAL MOMENTUM for the system BEFORE COLLISION?
14 kg m/s
24 kg m/s
10 kg m/s
-24 kg m/s
What will the TOTAL MOMENTUM be AFTER COLLISION?
12 kg m/s
24 kg m/s
10 kg m/s
-24 kg m/s
If the two cars have an ELASTIC COLLISION, which direction (if any) will they move?
The will BOUNCE OFF and move LEFT
They will STICK TOGETHER and move LEFT
They will BOUNCE OFF and move RIGHT
They will STICK TOGETHER and move RIGHT
If the cars collide INELASTICALLY, how would they move afterward (if at all)?
They would BOUNCE OFF and move LEFT
They would STICK TOGETHER and move LEFT
They would BOUNCE OFF and move RIGHT
They would STICK TOGETHER and move RIGHT
Which cart applies a GREATER FORCE during the collision (according to Newton's 3rd Law)?
Red Cart
Blue Cart
Forces are EQUAL for BOTH carts
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
Which one of the following units represents the standard metric units of momentum
Newtons * meter / second
Kilograms * meter / second2
meter / second
Kilograms * meter / second
Which one of the following units represents the standard metric units of impulse
Kilograms * meter / second2
Newton * meter
meter / second2
Newton * second
An object that has momentum can be described as _________
a) changing its velocity
b) moving fast
c) resisting changes in its state of motion
d) having its mass in motion
e) encountering a net force
Which one of these objects has the greater amount of momentum?
A turtle that slowly crosses a road
A parked car
A stop sign
When a cannon fires a cannon ball, it recoils backwards. This occurs because of...
Energy in the system is conserved
Energy in the system is increased
Momentum in the system is conserved
Energy in the system is not conserved
An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact
impulse, time
impulse, force
force, time
time, force
Padded dashboards in cars are safer in accidents than non padded ones because the passenger hitting the dash has...
a) Increased time of impact
b) decreased impulse
c) decreased impact force
d) a and b
e) a and c
A freight car of mass 20,000kg moves along a track at 15 m/s. What is the momentum of the car?
30,000 kg*m/s
3,000 kg*m/s
300,000 kg*m/s
3,000,000 kg*m/s
A 5 N force is applied to a 3 kg ball to slow it down from 9 m/s to 3 m/s. What is the impulse on the ball?
-2.5 N⋅s
-10 N⋅s
-18 N⋅s
-45 N⋅s
What is the momentum of a 30 kg penguin sliding at .67 m/s?
44.8 kg⋅m/s
20.1 kg⋅m/s
25 kg⋅m/s
67.4 kg⋅m/s
A penguin trips on some ice and hits the ground with a force of 34 N over .74 seconds. What was the impulse?
45.9 Ns
36.2 Ns
22.9 Ns
25.16 Ns
Match the following units with their variables!
Mass
kilograms
Velocity
m/s
Impulse
Ns
Momentum
kg⋅m/s
Time
seconds
A 27 kg penguin sliding at 2.1 m/s slides into a penguin at rest. They spin off together entangled at .78 m/s. What is the mass of the penguin at rest?
32.8 kg
45.7 kg
56.7 kg
45.7 N
A 2200 kg Honda civic travelling at 23 m/s crashes into a 6500 monster truck at rest. If the Civic was travelling at 2 m/s after the collision, what was the monster truck's velocity after the collision?
2.95 m/s
7.1 m/s
46200 m/s
6.8 m/s
Match the following definitions to their terms.
Momentum
The product of mass and velocity
Impulse
Product of net force over the time
Elastic collision
kinetic energy is conserved, they bounce
Inelastic collision
kinetic energy not conserved, they stick
The impulse given to an object is equal to the change in momentum.
True!
False!
Could be either.
Not enough information to tell.
The impulse given to an object is equal to the change in kinetic energy.
True!
False!
Not enough information to tell!
Only in certain situations
What type of collision conserves kinetic energy and objects bounce?
(a)
What type of collision doesn't conserve kinetic energy and objects stick?
(a)
A (a) is a collection of objects. In a (b) system, (c) can (d) and (e) can act on it.
Airbags and collapsible bumpers both (a) the (b) to (c) the force in a collision.
A particularly chubby penguin, mass of 40 kg slides down an iceberg at 14 m/s and slams into a smaller and unsuspecting penguin, mass of 29 kg. They bounce. If the chubby penguin slides to the left at -1.4 m/s, what is the velocity of the other penguin?
17.4 m/s
56 m/s
-21.2 m/s
21.2 m/s
Coach Smith strikes a 0.058 kg golf ball with a force of 272 N and gives it the ball a velocity of 62.0 m/s. How long was the club in contact with the ball?
.013 seconds
3.6 seconds
.026 seconds
.058 seconds
A force of 186 N acts on a 7.3 kg bowling ball for 0.40 s. What is the bowling ball’s change in momentum?
87. 8 kg*m/s
74.4 kg*m/s
2.92 kg*m/s
1357.8 kg*m/s
A 5500 kg freight truck accelerates from 4.2 m/s to 7.8 m/s in 15.0 s by applying a constant force.
What change in momentum occurs?
42900 kg⋅m/s
19800 kg⋅m/s
3670 kg⋅m/s
63490 kg⋅m/s
A 235 kg train car traveling at 32 m/s slams into another 137 kg train car, which was traveling at -17 m/s. They get entangled and travel off together. What velocity do they have?
13.95 m/s
42 m/s
26.47 m/s
-13.95 m/s
A 32 kg tuba player trips and runs at 2.1 m/s into a clarinet player at rest. If after the collision, the tuba player travels at .88 m/s and the clarinet player travels at 1.7 m/s, what is the clarinet player's mass?
22.96 kg
30.03 kg
39.04 kg
28.16 kg
An ice skating penguins with a mass of 29 kg is standing on a frozen pond. The penguin throws a .22 kg snowball at 17 m/s. What velocity does the penguin move backwards with?
-.13 m/s
.13 m/s
3.74 m/s
-3.74 m/s
A Macaroni Penguin is excited to try out his new snowball launcher. He launches a .35 kg snowball at 44 m/s. Unfortunately, he is standing on a frozen pond. If the Macaroni Penguin's mass is 27.8 kg, with what velocity will he move backward with?
-.55 kg
-.55 m/s
.55 m/s
.55 kg
