Question

i) What type of mechanical energy is possessed by the boy at position A?
ii) What type of mechanical energy is possessed by the boy at position C?
iii) Can you say that the energy is conserved when the boy reaches position D? Why?

Answer 1

Answer:

1 potential energy

2 kinetic energy

3 If only internal forces are doing work (no work done by external forces), then there is no change in the total amount of mechanical energy. The total mechanical energy is said to be conserved. ... In these situations, the sum of the kinetic and potential energy is everywhere the same.