When 2 or more objects collide, the quantity that does NOT change is the total _______________.

A. kinetic energy of all the objects C. momentum of every object
B. kinetic energy of each object D. Momentum of all the objects

Question

When 2 or more objects collide, the quantity that does NOT change is the total _______________.

A. kinetic energy of all the objects	C. momentum of every object
B. kinetic energy of each object		D. Momentum of all the objects

sidsiddhartha · Answer

If the collison is elastic then both the kinetic energy and momentum is the same before and after the collison.

If it's inelastic then the momentum before and after the collsion is the same, but the kinetic energy before and and after is not.