020 (part 1 of 3) 10.0 points A tennis ball is dropped from 1.97 m above the
ground. It rebounds to a height of 0.901 m.
With what velocity does it hit the ground?
The acceleration of gravity is 9.8 m/s
2
. (Let
down be negative.)
Answer in units of m/s.
021 (part 2 of 3) 10.0 points
With what velocity does it leave the ground?
Answer in units of m/s.
022 (part 3 of 3) 10.0 points
If the tennis ball were in contact with the
ground for 0.0102 s, find the acceleration
given to the tennis ball by the ground.