Question

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

• A. If both statement I and statement II are true and statement II is the correct explanation of statement I.
• B. If both statement I and statement II are true but statement II is not the correct explanation of statement I.
• C. If statement I is true but statement II is false.
• D. If both statement I and statement II 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.