Question

Question #4e38e

Answer 1

Work is force * distance...so....

Explanation:

So, one example is you push as hard as you can against a wall. No matter how hard you push, the wall doesn't move. So, no work is done.

Another is carrying an object at a constant height. The distance of the object from the ground doesn't change, so no work is performed

Answer 2

An example would be pushing a wall.

Explanation:

No matter how hard you push a wall, you are not doing work, as the wall is not moving. The work equation states that

`vec(W)=vec(F)*d`

Since the wall is not moving, then `d=0`, and therefore `vec(W)=0`, and so you are not doing any work.