Thank you!
I ve understand what you wanted to explain beside the last chapter
you ve said (as the surface rebound converting the stored energy into the motion of the ball).
Did you mean that the surface stretched in the ball make a work on the total ball ?
moving of the ball when no foot is...
if I shoot the football, the ball will recive a force in specific direction, and it would follow that direction.
Does the work is done by me when I shooted the ball, or the ball does work when it moves all the period after my shooting ?
the work includes force and displacement , so who does the...