Collission

If 2 objects collide and stick together, what will happen to their velocities?

• velocities will increase
• velocities will decrease
• velocities will stay the same
• none of the above

While playing with toy cars, Kirsten and Luca each push a car toward the center of the room. What happens when the toy cars collide?

• Energy is transferred.

• Energy is unchanged.

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

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

The impulse is ______ the change in momentum

• Greater than
• Equal to
• less than
• always double

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

The total momentum before a collision is _________ the total momentum after a collision.

• equal to 
• less than 
• more than
• It depends on the type of collision

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be 

• 0 m/s
• 1 m/s
• 2 m/s
• 4 m/s