Elastic collisions

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

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

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

If m1=m2 and they are rolled at each other they will hit and

• stop

• swap velocities

• explode

• double their velocities

If m1=m2 and m1 is rolled at a stopped m2 they will hit and m1 will

• stop

• swap velocities

• explode

• double their velocities

If m1=m2 and m1 is rolled at a stopped m2 they will hit and m2 will

• stop

• swap velocities

• take the velocity of m1

• double their velocities

If m1 is MUCH MORE massive than m2 and m1 is rolled at m2 (which is stopped) after the collision m1 will continue rolling with ________________ velocity it started with.

• about the same

• 4x

• the velocity of m1

• 2x

If m1 is MUCH MORE massive than m2 and m1 is rolled at m2 (which is stopped) after the collision m2 will have ________________ velocity of m1.

• about the same

• 4x

• the velocity of m1

• 2x

If m1 is MUCH LESS massive than m2 and m1 is rolled at m2 (which is stopped) after the collision m1 will be ____________ .

• about the same

• 4x

• going backwards

• stopped