Question

You use 35 J of energy to move a 7.0 N object. How far did you move it?

Answer 1

The object has  been moved by 5 m

Explanation:

The work done by a force when moving an object (which is equal to the energy used to move the object) is given by

$W=Fd cos \theta$

where

F is the magnitude of the force

d is the displacement of the object

$\theta$ is the angle between the direction of the force and of the displacement

In this problem, we have

W = 35 J is the work done

F = 7.0 N is the magnitude of the force

$\theta=0^{\circ}$, assuming the force is applied parallel to the direction of motion of the object

Therefore, we can solve the formula for d to find the displacement of the object:

$d=\frac{W}{F cos \theta}=\frac{35}{(7)(cos 0)}=5 m$

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