Question

total energy of a body at rest at a height h from zero level is 80j. what is the kinetic energy as it falls through a height h/2

Answer 1

Answer:

40 Jule

Explanation:

Total Energy, E = K + U

initially K = 0

E = U

E = 80 jule

at h = h/2

U = K

E = K + K

80 = 2K

40 Jule = K