Question Detail

PHY 101 Last Min Prep Objective Question

Question

In a two-body collision,
Options
A momentum is always conserved.
Correct Answer
B kinetic energy is always conserved.
C neither momentum nor kinetic energy is conserved.
D both momentum and kinetic energy are always conserved.
Correct Answer

Option A is the correct answer.

Detailed Explanation

In any collision, provided no external forces act, the total momentum of the system is always conserved. Kinetic energy is conserved only in elastic collisions, not in inelastic ones.

Hint

Momentum conservation is universal for isolated systems. Kinetic energy conservation depends on the type of collision.

Question Info