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.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!