Dropped tennis ball! Please help me to solve this problem... thanks a lot?
After you drop a tennis ball of 0.5 kg from rest at a height of 3.8 m onto a hard floor, find the fallowing:
a) what will be the speed of the ball at the instant of contact with the floor?
b) what force does the floor exert on the ball?
c) Over what time does the force act in bringing the ball to rest?
- 1 decade agoFavorite Answer
b) same answer as a bc of = but opposite
c) (.5)*((3.8)/delta(t))=8.63 solve for t
- 1 decade ago
Energy before the drop should equal energy after drop(release and motion of ball)
h=height from floor
Energy before:potential energy: mgh
Energy afterwards: kinetic energy: 1/2 mv^2
solve for v