Question

The force of 20N displaces an object 2m does work 20jule.the angle between force and displacement is?

Answer 1

$w \: = \: fs \cos(?)$
20 = 20*2 cos(?)
cos(?) = 1/2
therefore theta = 60°

Answer 2

Given,

Force(F) = 20N,

Distance(S)=2m

and Word done(W) = In order to calculate the angle between force and displacement, we need to apply the following formula:

W = f.s.cos A or 20 = 20*2*cos A or cos A = 1/2 or Cos A = Cos 60 or A = 60.

Thus the angle between force and displacement is 60 degree.