Answer:
4.8 m
Explanation:
When it hits the ground, all the kinetic energy is converted to potential energy. Potential energy, PE is given by mgh where m is the mass of the box, g is acceleration due to gravity and h is the height which is unknown for this case
PE=mgh and making h the subject of the formula then [tex]h=\frac {PE}{mg}[/tex] and substituting g with 9.81, PE with 1500 J and m with 32 kg then
[tex]h=\frac {1500}{32\times 9.81}=4.7782874617734m\approx 4.8 m[/tex]
