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WorksheetsPhysics Momentum and Impulse Review
Total questions: 115
Worksheet time: 3hrs 34mins
A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?
18.6 m/s
3.2 m/s
7.5 m/s
1.86 m/s
A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the change in the object's momentum?
45 kg m/s
72 kg m/s
32.4 kg m/s
0.45 kg m/s
The momentum of an object depends upon the object's ___________&_____________.
mass and energy
mass and veloctiy
mass and speed
size and shape
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.
-2,5
45
10
-18
The impulse-momentum theorem states that
Athe impulse on an object is less than the change in momentum it causes
the impulse on an object is greater than the change in momentum it causes
the impulse on an object is equal to the change in momentum it causes
the force on a moving object is equal to the magnitude of the impulse.
. A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
1 N
40 N
25 N
5 N
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
6030 kg
0,0134 kg
74,4 kg
80 kg
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.
1 N·s
6 N·s
None of these
66 N·s
he difference between a car hitting a wall vs. a car hitting a hay stack is
the change in momentum of the car hitting the wall is greater
the force on the car hitting the hay stack is greater
the Impulse on the car hitting the wall is greater
the collision time of the car hitting the hay stack is greater
When the speed of an object is doubled, its momentum...
remains unchanged in accord with the conservation of momentum.
quadruples.
decreases.
doubles.
If two objects have the same mass, then the faster moving object has ____________ momentum.
less
the same
more
None of these
Which takes more force to catch, a bowling ball or a ping pong ball?
bowling ball because it has more momentum
bowling ball because it has less momentum
both require the same amount of force when catching
ping pong ball because it has more momentum
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?
-18 N⋅s
-10 N⋅s
-45 N⋅s
-2.5 N⋅s
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.
1 N⋅s
33,3 N⋅s
6 N⋅s
11,1 N⋅s
How can a tennis ball and a bowling ball have the same momentum?
one is moving backwards
have the same speed
they can't
have different speeds
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?
Not enough information
0.5 N
1.5 N
15,000 N
Which has more momentum?
A moving car
A parked semi truck
they have the same amount of momentum
Which has more momentum?
A bus stopped at a stop sign
A bus barreling down the road (v = 10 m/s)
A hummingbird zipping down the street (v = 1 m/s)
A hummingbird hovering at a feeder
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had twice the mass and was moving at the same speed?
4x the momentum; 96 kg*m/s
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
1/4 the momentum; 6 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the same mass and was moving with one-half the speed?
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
1/2 the momentum; 12 kg*m/s
twice the momentum; 48 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the twice the mass and was moving with twice the speed?
1/2 the momentum; 12 kg*m/s
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
twice the momentum; 48 kg*m/s
A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?
32 m/s
8 m/s
0.125 m/s
18 m/s
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s after the collision. What is the velocity of the truck after the collision?
10 m/s
0 m/s
5 m/s
2 m/s
When two objects interact in an isolated system,
the momentum of each object is conserved
the total momentum of the system is zero
the total momentum is conserved only if the objects move in
opposite directions
the total momentum is always conserved
When two ice skaters initially at rest push off one another, their final momenta are
equal in magnitude and direction.
equal in magnitude and opposite in direction
in the same direction but of different magnitudes
in opposite directions and possibly of different magnitudes
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
Two identical cars are driving down the highway. Car A is traveling at 80 km/hr , while Car B is traveling at 60km/hr. Which of the two cars would have a greater momentum?
Car A
Car B
both have the same momentum
cannot be determined
9. Which has a greater momentum?
truck
motorcycle
both have the same momentum
cannot be determined
When the velocity of an object is doubled, its momentum
A 50 kg ball rolls east down the street at 5 m/s. Calculate the momentum of the ball.
55 kg*m/s east
10 kg*m/s east
250 kg*m/s east
500 kg*m/s east
A 5 kg object rolling at 2 m/s.
A 15 kg object rolling at 2 m/s.
A 15 kg object rolling at 1 m/s
A 40 kg object rolling at 2 m/s.
A 0.250 kg cart moving southwest at 0.400 m/s has how much momentum?
0.1 kg-m/s sw
1 kg-m/s nw
10 kg-m/s sw
100 kg-m/s nw
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s due east. What is the biker's momentum?
25 m/s east
375 m/s west
25 kg m/s east
375 kg m/s east
If an object velocity is 0 m/s which of the is true.
The object has momentum
The object's momentum is changing
The object has NO momentum
What object will have more momentum a 1000 kg truck moving 7 m/s or a 500 kg car moving 10 m/s
Truck
Car
Collisions where objects BOUCE apart.
Inelastic
Elastic
Explosive
None of these
Momentum before = Momentum after
according to the law of conservation of __________
momentum
Energy
Force
Acceleration
Two pool balls collide and go opposite directions is an example of...
Inelastic
Collision
Elastic
Collision
Explosion
None of these
Collision where objects collide and stick together.
Elastic
Collision
Inelastic
Collision
Explosion
None of these
For every action there is an equal, but opposite reaction.
Newton's 1st
law
Newton's 2nd
law
Newton's 3rd
law
Which 2 variables determine the momentum of an object?
(pick 2)
time
density
velocity
mass
According to Newton's 3rd law...
Action: Your foot applies a downward force on the floor.
Reaction:
your foot goes through the floor
the floor provides an equal force upwards on your foot
your foot bounces off the floor
the floor collapses
A car has 10,800 Kg x 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
More than 10,800
The same.
Exactly 10,800
We need more information
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
elastic collision
explosion
none of these
Collision where objects collide, and stick together.
inelastic collision
elastic collision
explosion
none of these
For every action, there is an equal and opposite reaction.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
none of these
Which TWO variables determine the MOMENTUM for an object?
time
velocity
density
mass
A trampoline increases __________________, which in turn decreases _____________________.
force / time
mass / weight
time / force
acceleration / velocity
Action: Your foot applies a downward force onto the floor.
Reactiion?
Your foot pushes through the floor.
Your foot bounces off of the floor.
The floor applies an equal and opposite force upward on your foot.
The floor collapses.
A car has 10,800 Kg x 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
1.5 N
0.5 N
Not enough information
What is the TOTAL MOMENTUM for the system BEFORE COLLISION?
14 Kg x m/s
10 Kg x m/s
24 Kg x m/s
-24 Kg x m/s
What will the TOTAL MOMENTUM be AFTER COLLISION?
12 Kg x m/s
10 Kg x m/s
24 Kg x m/s
-24 Kg x 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 BOUNCE OFF and move RIGHT
They will STICK TOGETHER and move LEFT
They will STICK TOGETHER and move RIGHT
If the cars collided INELASTICALLY, how would they move afterward (if at all)?
They would BOUNCE OFF and move LEFT
They would BOUNCE OFF and move RIGHT
They would STICK TOGETHER and move LEFT
They would STICK TOGETHER and move RIGHT
During an INELASTIC COLLISION what would happen to the velocity of the cars since they are now stuck together?
Velocity INCREASES
Velocity DECREASES
Velocity remains the SAME
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 ___________&_____________.
mass and energy
mass and veloctiy
mass and speed
size and shape
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.
-2,5
45
10
-18
The impulse-momentum theorem states that
Athe impulse on an object is less than the change in momentum it causes
the impulse on an object is greater than the change in momentum it causes
the impulse on an object is equal to the change in momentum it causes
the force on a moving object is equal to the magnitude of the impulse.
. A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
1 N
40 N
25 N
5 N
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
6030 kg
0,0134 kg
74,4 kg
80 kg
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.
1 N·s
6 N·s
None of these
66 N·s
he difference between a car hitting a wall vs. a car hitting a hay stack is
the change in momentum of the car hitting the wall is greater
the force on the car hitting the hay stack is greater
the Impulse on the car hitting the wall is greater
the collision time of the car hitting the hay stack is greater
When the speed of an object is doubled, its momentum...
remains unchanged in accord with the conservation of momentum.
quadruples.
decreases.
doubles.
If two objects have the same mass, then the faster moving object has ____________ momentum.
less
the same
more
None of these
Which takes more force to catch, a bowling ball or a ping pong ball?
bowling ball because it has more momentum
bowling ball because it has less momentum
both require the same amount of force when catching
ping pong ball because it has more momentum
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?
-18 N⋅s
-10 N⋅s
-45 N⋅s
-2.5 N⋅s
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.
1 N⋅s
33,3 N⋅s
6 N⋅s
11,1 N⋅s
How can a tennis ball and a bowling ball have the same momentum?
one is moving backwards
have the same speed
they can't
have different speeds
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?
Not enough information
0.5 N
1.5 N
15,000 N
Which has more momentum?
A moving car
A parked semi truck
they have the same amount of momentum
Which has more momentum?
A bus stopped at a stop sign
A bus barreling down the road (v = 10 m/s)
A hummingbird zipping down the street (v = 1 m/s)
A hummingbird hovering at a feeder
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had twice the mass and was moving at the same speed?
4x the momentum; 96 kg*m/s
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
1/4 the momentum; 6 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the same mass and was moving with one-half the speed?
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
1/2 the momentum; 12 kg*m/s
twice the momentum; 48 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the twice the mass and was moving with twice the speed?
1/2 the momentum; 12 kg*m/s
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
twice the momentum; 48 kg*m/s
A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?
32 m/s
8 m/s
0.125 m/s
18 m/s
