A tennis ball is dropped from 1.68 m above the ground, It rebounds to a height of 0.818 m.
With what velocity does it hit the ground?
The acceleration of gravity is 98 m/s^2 (Let
down be negative.)
Answer in units of m/s.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

B? i think so but hope that's right and answers your question