Question

A tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s.
(a) what will the ball\'s speed be when it returns to its starting point?
(b) how long will the ball take to reach its starting point?

Answer 1

Answer:

• a)8m/s
• b) 1.6 s

Explanation:

v= u+at..........(1)

u=+8.0 m/s

v= -8.0 m/s.

so we get t= 1.6s from. equation (1)