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- 1. Multiple Choice
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
- 2. Multiple Choice
Momentum before = Momentum after
according to the Law of Conservation of __________________________.
Momentum
Energy
Force
Acceleration
- 3. Multiple Choice
Two Pool Balls collide and then go separate directions.
inelastic collision
elastic collision
explosion
none of these
- 4. Multiple Choice
Collision where objects collide, and stick together.
inelastic collision
elastic collision
explosion
none of these
- 5. Multiple Choice
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
- 6. Multiple Choice
Which TWO variables determine the MOMENTUM for an object?
time
velocity
density
mass
- 7. Multiple Choice
A trampoline increases __________________, which in turn decreases _____________________.
force / time
mass / weight
time / force
acceleration / velocity
- 8. Multiple Choice
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.
- 9. Multiple Choice
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.
- 10. Multiple Choice
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
- 11. Multiple Choice
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
- 12. Multiple Choice
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
- 13. Multiple Choice
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
- 14. Multiple Choice
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
- 15. Multiple ChoiceIf two objects have the same mass, then the faster moving object has ____________ momentum.morelessthe same
- 16. Multiple Choice
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
- 17. Multiple ChoiceJorge noticed a collision outside the coffee shop where two cars collided and stuck together. What type of collision did he observe?ElasticInelasticCompletely inelasticnone
- 18. Multiple ChoiceWhile playing pool, Emma notices that the pool balls bounce apart. What type of collision is this?ElasticInelasticExplosiveForce
- 19. Multiple Choice
An asteroid travels at 6,000 meters in 10 seconds. What is the speed?
60 meters/seconds
60 seconds/meter
600 meters/second
6 meters/second
- 20. Multiple Choice
You do not know an object's velocity until you know it's
Speed
Reference point
Speed and direction
Acceleration
- 21. Multiple Choice
The Law of Conservation of Momentum states that the amount of momentum in a system is ___________________ before and after a collision.
greater
decreased
the same
unknown
- 22. Multiple Choice
No collision is either perfectly elastic or perfectly inelastic.
True
False
- 23. Multiple ChoiceThe law of conservation of momentum states that,p before is less than p afterp before is the same as p afterp before is more than p after
- 24. Multiple ChoiceA 2.5 kg ball moving at 4.2 m/s collides with a 2.5 kg stationary ball. If the first ball is at rest after the collision, what is the velocity of the second ball?2.1 m/s2.5 m/s4.2 m/s8.4 m/s
- 25. Multiple ChoiceA 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s. What is the velocity of the truck?10 m/s0 m/s5 m/s2 m/s
- 26. Multiple ChoiceWhile playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?2 m/s8 m/s-2 m/s1.5 m/s
- 27. Multiple ChoiceA 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?25 m/s375 m/s25 kg m/s375 kg m/s
- 28. Multiple ChoiceA runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?6030 kg0.0134 kg74.4 kg80 kg
- 29. Multiple Choice
The units for Impulse are
N/s
N·s
N
m/s
- 30. Multiple ChoiceCart 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?Cart BCart Athey are the same
- 31. Multiple Choice
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
66 N·s
None of these
- 32. Multiple ChoiceThe purpose of crumble zones on a car is todecrease time of impact.increase force of impact.increase the time of impact.decrease the impulse during impact.
- 33. Multiple ChoiceThe difference between a car hitting a wall vs. a car hitting a hay stack isthe Impulse on the car hitting the wall is greaterthe change in momentum of the car hitting the wall is greaterthe force on the car hitting the hay stack is greaterthe collision time of the car hitting the hay stack is greater
- 34. Multiple Choice
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
.
.
-10
-18
-45
- 35. Multiple ChoiceThe impulse-momentum theorem states thatthe impulse on an object is equal to the change in momentum it causesthe force on a moving object is equal to the magnitude of the impulse.the impulse on an object is greater than the change in momentum it causesthe impulse on an object is less than the change in momentum it causes
- 36. Multiple Choice
_________________ causes and is equal to a change in momentum
Impulse
Force
Joule
Watt
- 37. Multiple Choice
What is the most occurring type of collision?
Inelastic Collisions
Elastic Collisions
Perfectly Inelastic Collisions
None
- 38. Multiple Choice
In what type of collisions, both momentum, and total kinetic energy is conserved?
Elastic, Inelastic and Perfectly Inelastic Collisions
Perfectly Inelastic Collisions
Elastic Collisions
Inelastic Collisions
- 39. Multiple Choice
The picture shows what type of collision?
Elastic, Inelastic and Perfectly Inelastic Collision
Inelastic Collision
Perfectly Inelastic Collision
Elastic Collision
- 40. Multiple Choice
The picture shows what type of collision?
Elastic, Inelastic and Perfectly Inelastic Collision
Inelastic Collision
Perfectly Inelastic Collision
Elastic Collision
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