12. A basketball dropped from rest 1.00 m above the floor rebounds to a height of

12. A basketball dropped from rest 1.00 m above the floor rebounds to a height of 0.67 m. Assuming the ball is not moving horizontally, calculate its velocity...
(a)just before it hits the floor on the way down and
(b) Just after it left the floor on the way up.
(c) If the ball is in contact with the floor for 0.10 s, determine its acceleration;
i. On the way down,
ii. While it is contact with the floor, and
iii. On the way up.