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Worksheetselastic vs inelastic
Total questions: 29
Worksheet time: 17mins
1. Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
2. Momentum before = Momentum after
according to the Law of Conservation of __________________________.
Momentum
Energy
Force
Acceleration
3. Two Pool Balls collide and then go separate directions.
inelastic collision
explosion
elastic collision
none of these
4. Collision where objects collide, and stick together.
inelastic collision
explosion
elastic collision
none of these
6. Which TWO variables determine the MOMENTUM for an object?
time
density
velocity
mass
8. 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
The same. 10,800 Kg x m/s
More than 10,800 Kg x m/s
Not enough information.
10. What is the TOTAL MOMENTUM for the system BEFORE COLLISION?
14 Kg x m/s
24 Kg x m/s
10 Kg x m/s
-24 Kg x m/s
11. What will the TOTAL MOMENTUM be AFTER COLLISION?
12 Kg x m/s
24 Kg x m/s
-24 Kg x m/s
10 Kg x m/s
12. 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
13. If the cars collided 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
14. 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
2 balls collide and bounce off of each other. During the collision total momentum remained constant and total kinetic energy remained constant. What type of collision is this?
Inelastic Collision
Elastic Collision
Perfectly Inelastic Collision
No collision occurred
A BMW rear ends a car at the stop light. Neither car sticks together. The momentum was conserved in the collision but the kinetic energy was not conserved. What type of collision is this?
Elastic Collision
Inelastic Collision
Perfectly inelastic Collision
No Collision
A piece of silly putty is dropped onto a skateboard as it rolls by. The putty sticks to the skateboard and moves the direction the board is moving. What type of collision is this?
Inelastic collision
Elastic Collision
Perfectly Inelastic collision
No collision
If a collision is elastic which of the following must be true?
Momentum is not conserved
The objects are in an open system
The total momentum is equal to 0
Kinetic Energy is conserved
If a collision is inelastic which of the following must be true?
the total momentum of the system is conserved
The total momentum of the system is not conserved
The total momentum of the system is 0
The total kinetic energy of the system is conserved
If there is a perfectly inelastic collision, which of the following must be true?
The total momentum of the system is 0
The total kinetic energy of the system is conserved
The objects stick together after colliding
The total momentum of the system is not conserved
Two carts collide. They stick together and continue moving. Is momentum conserved in this interaction?
Yes
No
Two carts collide. They stick together and continue moving. Is total kinetic energy conserved in this interaction?
Yes
No
Two metal balls collide in an elastic collision. Is momentum conserved in this collision?
Yes
No
Two metal balls collide in an elastic collision. Is total kinetic energy conserved in this collision?
Yes
No
Two cars collide in a car crash. During the crash the cars bumpers became dented and some thermal energy was given off in the crash. Was momentum conserved in the crash?
No
Yes
Two cars collide in a car crash. During the crash the cars bumpers became dented and some thermal energy was given off in the crash. Was Total Kinetic Energy conserved in the crash?
No
Yes
What is an elastic collision?
An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies is different.
An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
An inelastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
What is an inelastic collision?
When two objects collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)
When two objects collide, becoming stuck together and internal kinetic energy is lost
When two objects don't collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)
In what type of collisions, momentum is conserved?
Inelastic and Perfectly Inelastic Collisions
Elastic, Inelastic and Perfectly Inelastic Collisions
Inelastic and Elastic Collisions
None
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
Momentum is conserved __________ collisions.
only in elastic
only in inelastic
in all
never during
Kinetic energy is conserved __________ collisions.
only in elastic
only in inelastic
in all
never during
