Momentum And Collision Test Question Preview (ID: 62853)


Momentum And Impulse Test Review. TEACHERS: click here for quick copy question ID numbers.

The recoil momentum of a cannon that kicks is _____ the momentum of the cannonball it fires.
a) more than
b) less than
c) the same as
d) If you choose this answer, you will get the problem wrong.

How does the total momentum of the two objects before a collision compare with the total momentum after the collision?
a) It is the same
b) It is less
c) It is equal to zero
d) It is greater

A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass, its momentum would be
a) zero
b) unchanged
c) cut in half
d) doubled

When object A collides with object B and bounces back, its final momentum is __________________ its initial momentum.
a) greater than
b) less than
c) in the same direction of
d) in the opposite direction of

In a closed system, the loss momentum of one object _______ the gain in momentum of another object.
a) is less than
b) is greater than
c) not enough information to tell
d) equals

What is momentum?
a) refers to the quantity of motion that an object has
b) the ability to do work or to cause change
c) energy which is moved between two things when one of them is hotter than the other
d)

When two objects collide elastically the momentum is conserved. Which of the following is true about the kinetic energy during the collision?
a) The kinetic energy is conserved
b) The kinetic energy is lost
c) The kinetic energy is gained
d) The Kinetic energy is same

A 1000.–kilogram car traveling 20.0 meters per second east experiences an impulse of 2000. newton • seconds west. What is the final velocity of the car after the impulse has been applied?
a) 18.0 m/s east
b) 19.5 m/s east
c) 20.5 m/s west
d) 22.0 m/s west

Impulse and momentum are measured in
a) kg*m/s
b) kg/m/s
c) kg/m*s
d) kg*m*s

During a collision, the forces on the objects are...
a) more for the heavier object
b) more on the light object
c) always zero
d) equal to on both objects

The impulse-momentum relationship is a direct result of Newton's
a) 1st law
b) 2nd law
c) 3rd law
d) law of gravity

Impulse is equal to...
a) change in momentum
b) force divided by time
c) force x acceleration
d) momentum x time

Which has more momentum?
a) a train as rest
b) a baby crawling across the floor
c) a parked dump truck
d) a baby sleeping

A hotwheel car collides with an identical car that is stationary in an elastic head-on collision. After the collision, which of the following is true of the first car?
a) it maintains its velocity
b) it moves in the opposite direction
c) it comes to a rest
d) it doubles its velocity

2 cars have a head on collision. What is the change in total momentum of the 2 cars before and after the crash? Car 1 is 1000 kg and car 2 is 1500. Both are traveling at 10 m/s
a) 250 kg*m/s
b) 50 kg*m/s
c) 0 kg*m/s
d)

Conservation of momentum states that momentum is conserved in a system as long as there are no outside______________affecting the system.
a) forces
b) velocities
c) acceleration
d) energy

During a collision, the forces on the objects are...
a) more for the heavier object
b) more on the light object
c) always zero
d) equal to on both objects

A 1500 kg car moving at 20 m/s collides elastically with a 1000 kg car moving at 5 m/s .If the velocity of 1000 kg car after collision is 10 m/s then what is the velocity of 1500 kg car
a) 16.7 m/s
b) 15 m/s
c) 5 m/s
d) 20 m/s

A 10 kg mass of clay is thrown at the toy car with a velocity of 6 m/s .If the mass of the toy car is 20 kg and clay stick to it after hitting then what is the velocity of the toy car and clay after collision?
a) 3 m/s
b) 2 m/s
c) 0 m/s
d) 5.3 m/s

An official major league baseball has a mass of 0.14 kg. A pitcher throws a 40 m/s fastball which is hit by the batter straight back up the middle at a speed of 46 m/s. a. What is the impulse of the ball during the collision with the bat?
a) 12 Ns
b) 6 Ns
c) -12 Ns
d) -6 Ns

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