Which statement best compares gamma rays to the other components of the electromagnetic spectrum? Am I correct ???

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.