Respuesta :

sporkspike
Work = Force * distance 
F = W/d = 15 / 1 = 15 Newtons

The force that he used is 15 newtons.

Given that,

  • There are 15 joules of work for pushing up the pencil.
  • And, the distance is 1 meter.

We know that

Work = Force × distance

So, the force = work ÷ distance

= 15 ÷ 1

= 15 newtons  

Therefore we can conclude that the force that he used is 15 newtons.

Learn more: brainly.com/question/13191643