In a perfectly elastic collision between two objects of equal mass in one dimension, where one is initially at rest, what happens?
ABoth objects move together at the same velocity.
BThe moving object stops, and the stationary object moves off with the same velocity.
CBoth objects bounce back with equal speed.
DThe moving object continues at the same velocity.
Explanation
📌 For equal-mass elastic collisions in 1D, the incoming object stops (transfers all its momentum) and the target moves off with the incoming object's velocity — a classic result seen in billiards and Newton's cradle. Distractor A describes a perfectly inelastic collision; C would violate momentum conservation; D would violate momentum conservation.