MCQ
When a body moves with some friction on a surface
- AIt loses kinetic energy but momentum is constant
- BIt loses kinetic energy but gains potential energy
- ✓Kinetic energy and momentum both decrease
- DMechanical energy is conserved
✓
Answer
Correct option: C.
Kinetic energy and momentum both decrease
c
(c) Friction is a non-conservative external force to the system, it decreases momentum and kinetic energy both.
(c) Friction is a non-conservative external force to the system, it decreases momentum and kinetic energy both.
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