A ball dropped from height of 4.00m makes a perfectly elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance: (a) Show that the ensuing motion is periodic
(b) Determine the period of the motion
(c) Is the motion simple harmonic? Explain.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

answer; equivalent to a one(1) horsepower motor;