Basketball player Darrell Griffith is on record as attaining a standing vertical jump of 1.2 m. (This means that he moved upward by 1.2 m after his feet left the floor. Griffith weighed 890 N.
A- What is his speed as he leaves the floor?
B- If the time of the part of the jump before his feet left the floor was 0.300 s , what was the magnitude of his average acceleration while he was pushing against the floor?
C- Use Newton's laws and the results of part (B) to calculate the average force he applied to the ground.