Collisions in One Dimension In this simulation choose all the correct statements
ID: 1602441 • Letter: C
Question
Collisions in One Dimension In this simulation choose all the correct statements about this situation from the list below. The magnitude of the change in momentum for one object in the collision is equal to the magnitude of the change in momentum for the other object in the collision If the magnitude of the momentum of one object is smaller after the collision than it is before the collision, the magnitude of the momentum of the other objec must be larger after the collision than it is before the collision. The motion of the center-of-mass is completely unaffected by any change in the elasticity of a collision. Momentum and kinetic energy are always conserved. It is impossible to have a collision between two objects in which the mass of the system is stationary the entire time. Momentum is always conserved, but kinetic energy is conserved only when the collision is elastic. If the center-of mass of the system is moving in one direction before the collision it must move in the opposite direction after the collision. Momentum and kinetic energy are conserved only when the collision is elastic (when the elasticity equals 1). The of the two objects before the collision equals the vector sum of the momenta of the two objects after the collision vector sum of the momentaExplanation / Answer
1. for elastic collision momentum is always conserved therefore change in momentum for 1st ball will be equal to 2nd ball
2.using conservation of momentum in 2d space if an object loses its momentum after collision second object must gain the same momentum
3. true momentum is vector quantity so motion of center of mass will not change
4. momentum is always conserved but kinetic energy will loss in inelastic collision
5. false when two identical objects collide with the same velocity and retrace their path center of mass will remain stationary
6.true in inelastic collision there will be loss of kinetic energy
7. false motion of center of mass will not change after collision
8. false only kinetic energy will not be conserved inelastic collision while momentum will remain conserved.
9. True momentum is a vector quantity.