Answer:
i think its B
Explanation:
i found the answer on another website hope its the right answer :)
I feel like it could be A
Gravity increased the downward speed (or decreases the upward speed) by 9.8 m/s every second.
21.2/9.8 = 2.2 seconds
Answer:60 gm
Explanation:
Given
initial velocity of ball 
Force exerted by racquet 
time period of force 
final velocity of ball 
Racquet imparts an impulse to the ball which is given by



I’m pretty sure it’s c.... hope it helps and hope it’s right.