Question

3. A tennis ball is thrown straight up into the air with an initial velocity of 8.9 m/s. -9.81 gravity
a. How long does it take to reach its highest point?
b. How high does the ball travel?​

Answer 1

Answer:

a. time is 0.91s

b. height is 4.04m

Explanation:

• t = u/g
• t = 8.9/9.81 = 0.91s
• the time it takes for the tennis ball to reach its highest point is 0.91 seconds

• S = u²/2g
• S = 8.9²/2x9.81
• s = 79.21/19.62
• s = 4.04m