Question

Assertion : Work done by the friction or viscous force on a moving body is negative.
Reason : Work done is a scalar quantity which cannot be negative like mass.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

Work done is a scalar quantity. It can be positive or negative unlike mass and kinetic energy which are positive scalar quantities.