The force applied is 10.68 N
Explanation:
The work done by a force on an object is given by:
[tex]W=Fd cos \theta[/tex]
where
F is the magnitude of the force
d is the displacement
[tex]\theta[/tex] is the angle between the direction of the force and of the displacement
In this problem we know:
W = 142 J
d = 13.3 m
[tex]\theta=0^{\circ}[/tex] since the force is applied horizontally, in the direction of motion of the box
So, solving for F, we find the magnitude of the force:
[tex]F=\frac{W}{d cos \theta}=\frac{142}{(13.3)(cos 0)}=10.68 N[/tex]
Learn more about work:
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