WorksheetsMomentum and Impulse Review
Total questions: 24
Worksheet time: 45mins
Which has more momentum: a 1000-kg car stopped at a red light or a 12-kg bike moving at 15 mi/h?
car
bike
they are equal
cannot determine using the info provided
Which object has more momentum?
a 100-kg motorcycle going 30 km/h.
a 12-kg bicycle traveling at 30 km/h.
a 70-kg runner moving at 30 km/h.
They all have the same momemtum.
If two shopping carts are traveling at the same speed, but one is full and one is empty, which will have more momentum?
The empty one
The full one
They have the same momentum.
A 20-kg rock is traveling at 4 m/s, which of the following shows the correct calculation of the momentum of the rock?
p=vm=420=5 kg⋅sm
p=mv=20⋅4=80 kg⋅sm
I=Ft=20⋅4=80 N⋅s
Δp=I=20 kg⋅sm
During a collision. an object experiences an impulse. The impulse causes and is equal to the _____ of the object
energy change
kinetic energy change
force
momentum
momentum change
The difference between a truck hitting a wall vs. the same car traveling at the same speed hitting a hay stack is...
the impulse on the car hitting the wall is greater
the change in momentum of the car hitting the wall is greater
the force on the car hitting the hay stack is greater
the collision time of the car hitting the hay stack is greater
Padding in helmets can reduce head injuries by decreasing momentum over a ________time, which results in ________ force.
shorter; less
shorter; more
longer time; less
longer time; more
A 0.2-kg egg lands on a carpeted floor. If its momentum right before impact is 0.8 kg*m/s and the egg doesn't break, how much impulse did the floor apply to it?
0.16 N*s
0.25 N*s
0.8 N*s
4 N*s
A 0.2-kg egg lands on a carpeted floor. If its momentum right before impact is 0.8 kg*m/s and the egg breaks, how much impulse did the floor apply to it?
0.16 N*s
0.25 N*s
0.8 N*s
4 N*s
Trebuchet's can launch heavy objects can greatly increase the momentum of heavy objects and launch them very far by applying a ________ force over a ______time.
large; long
small; long
large; short
small; short
What momentum will a waterballoon acquire if a slingshot applies a force of 100 N to it for 0.5 s?
p=mv =100⋅0.5=50 kg⋅sm
I=Ft=100⋅0.5 =50 N⋅s
Δp=I=Ft=100⋅0.5=50 kg⋅sm
p=vm=0.5100=200 smkg
This gif is an example of...
An Inelastic collision
An Elastic collsion
An object traveling at 5 m/s collides with another object. Both stick together and continue to travel. What type of collision is this?
Elastic collision
Inelastic collision
Normal collision
The Law of Conservation of Momentum states:
The total momentum before a collision is equal to the total momentum after a collision.
The total momentum before a collision is greater than the total momentum after a collision.
The total momentum before a collision is less than the total momentum after a collision.
The total momentum before a collision is not related to the total momentum after a collision.
Car A traveling at 20 mi/hr rear-ends car B (same mass) that is stopped at a stoplight in a elastic collision. If momentum is conserved, after the collision Car A will stop and Car B will
travel in the same direction A had but at a slower speed.
travel in the same direction that A had but at a faster speed.
travel in the same direction and with the speed that A had.
travel in the opposite direction A had at a slower speed.
Two cars moving toward each other have a head-on inelastic collision and stop immediately. Compare the magnitude of their momentum before the collision.
The more massive car had more momentum.
The less massive car had more momentum.
The cars had the same momentum.
Can't tell; depends on the cars' masses.
A block sliding on a frictionless surface runs into a second block at rest that has twice the mass. After the two collide, they stick together and travel with a velocity...
that is twice (2 times) the original velocity of the first block.
that is one-half (1/2) the original velocity of the first block
that is equal to the original velocity of the first block.
that is one-third (⅓) the original velocity of the first block
A 1000-kg car and a 2000-kg truck moving toward each other have a head-on inelastic collision and stop immediately afterwards. Compare their speeds before the collision.
The truck was moving at about twice the speed of the car.
The car was moving at about twice the speed of the truck.
They had the same speed.
Not enough information to determine.
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
Skater 1 experiences a greater change in momentum
Skater 2 experiences a greater change in momentum
Skater 1 has a greater speed than Skater 2
Skater 1 experiences a greater force
A 300-kg cannon fires a 25-kg cannonball. If momentum is conserved, compared to the momentum of the cannonball, the recoil momentum of cannon is
greater than the cannonball's momentum.
less than the cannonball's momentum.
equal in magnitude and opposite direction of cannonball
A 300-kg cannon fires a 25-kg cannonball. If momentum is conserved, compared to the speed of the cannonball, the recoil speed of cannon is
greater than the cannonball's speed.
less than the cannonball's speed.
equal to the cannonball's speed.
