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.

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.

Tardigrade Admin · Accepted Answer

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

Q. 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.

If both statement I and statement II are true and statement II is the correct explanation of statement I.

If both statement I and statement II are true but statement II is not the correct explanation of statement I.

If statement I is true but statement II is false.

If both statement I and statement II are false.

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

Q. 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.