Question

A tennis ball is thrown straight up with an initial speed of 20.5 m/s. It is caught at
the same distance above ground as it was thrown.
a. How high does the ball rise?
b. How long does it take for the ball to reach its maximum height?

Answer 1

Answer:21.4 m

Time in air = 2 x 2.09 = 4.18 s

Step-by-step explanation:

v(f)² = v(i)² + 2as  Take up as positive direction  0 = 20.5² - 2 * 9.8s  s = 21.4 m  So the ball rises to 21.4 m