Question

Which statements describe a situation in which work is being done? Check all that apply.

Answer 1

The work is being done in following cases:

A mover carries a box up a flight of stairs.

A mover carries a box across a room.

Wind blows a pool chair across the yard.

A weightlifter lifts a barbell off the ground.

These are the only cases in which work is being done. The Formula of Work is:

Work= Force applied x Distance moved.

In all of these cases force is being applied and the object on which the force is being applied move in a horizontal or Vertical direction.  Thus Work is done !

Answer 2

Answer:

A. A box is carried up a flight of stairs by a mover.

D. Wind blows a pool chair across the yard.

E. A weightlifter lifts a barbell off the ground.

Explanation: