Question

A body of mass 25 kg is raised to the top of a building 10 m high and then dropped freely under
gravity (g = 10 m/s):
(a) Calculate the work done in raising the body to the top of the building.
(b) What is the value of the gravitational potential energy at the top of the building.
(c) By what factor will the gravitational potential energy of the same body increase if it is raised
to the top of another multistorey building 30 m high?
(d) When will the kinetic energy of the body be maximum?​

Answer 1

Answer (a) 2500J

              (b) G.P.E= mgh = 2500J

              (c) 7500J

               (D) At the bottom

Explanation:

Answer 2

Answer:

see the image above, there is your answer

Explanation:

hope it will help you :)