3. A sphere, mass m, falls to the floor from a height h. The sphere rebounds to its original heighth following a perfectly elastic collision with the floor. During the time the sphere
is in contact with the floor, what is the average force the floor applies to the sphere?

hey , the answer is c

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!