Question

Question #7aa60

Answer 1

`400` joules

Explanation:

Work is defined as the product of the force applied and the distance the object moves as a result of that force:

`W=F*Deltad costheta`

where `theta` is the angle between the force and the displacement.

If the force in this problem is in the same direction as the displacement, then `theta = 0°` and `costheta=1` (so we can ignore it this time).

So, `W=F*DeltaD = 40 N xx 10 m = 400 Nm`

The unit "newton-metre" is known as a joule (of energy).