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

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