Question

give reason: work done is zero in carrying a load overhead and walking straight.

please answer fast.

Answer 1

Work done is zero in carrying a load overhead and walking straight because the direction of the work done is parallel to the direction of displacement.

Answer 2

Work done is zero because:there is no force applied and force simply means a push or a pul. The work done by a force depends upon the applied force and displacement ,produced by it in its own direction.