Question
Question: A ball is moving with constant velocity and eventually collides with a wall. Which of the following ...
A ball is moving with constant velocity and eventually collides with a wall. Which of the following quantities remains conserved, apart from momentum?
A
Force
B
Power
C
Energy
D
Displacement
Answer
Energy
Explanation
Solution
During a collision, the total energy of the system (ball + wall) is always conserved, though it may transform from one form to another (e.g., kinetic to heat, sound). Force, power, and displacement are not conserved during the collision.