2. You decide to lift a 25 kg box to a height of 3 meters. How much work will you do while moving
the box?

Answer:
W = 735.75[J]
Explanation:
Work is defined as the product of force by distance. Therefore we can use the following equation.
[tex]W=F*d[/tex]
where:
W = work [J] (units of Joules)
F = force [N] (units of Newtons)
d = distance = 3 [m]
But first, we must determine the force that is equal to the product of mass by gravity (weight of the body).
[tex]F=m*g\\F=25*9.81\\F=245.25[N][/tex]
[tex]W=F*d\\W=245.25*3\\W=735.75[J][/tex]