The true scientific way is the last: using the water displacement method
Newton's 2nd law of motion:
Force = (mass) x (acceleration)
= (0.314 kg) x (164 m/s²)
= 51.5 newtons
(about 11.6 pounds) .
Notice that the ball is only accelerating while it's in contact with the racket.
The instant the ball loses contact with the racket, it stops accelerating, and
sails off in a straight line at whatever speed it had when it left the strings.
Hailstones form when raindrops freezes that is from liquid state to solid state.
Hope you got your answer!
La lumière qui vient des étoiles.