how do i sketch a v/t graph for:
a) a ball is dropped from a certain height and bounces off a hard floor. the speed just before the impact with the floor is the same asthe speed just after the impact. assume the time of contact is negligbly small.
b) a cart slides with a negilible friction along a horizontal air track. when the cart hits the ends of the air track it reverses direction with the same speed it had right beforre the impact. assume the time of contact of the cart and the ends of the air track is negligibly small.
vt_graphs.png