Disregarding air drag, how fast must you toss a ball straight upward in order for the ball to remain in the air for a total time of 2 s?
A)5 m/s
B)7)5 m/s
C)10 m/s
D)15 m/s
E)20 m/s

Question

Quizplus · Accepted Answer

The total time in the air is 2 seconds, which means it takes 1 second to reach the peak. Using the formula $ v = gt $, where $ g = 9.8 \, \text{m/s}^2 $ and $ t = 1 \, \text{s} $, the initial velocity $ v $ is approximately 9.8 m/s, which rounds to 10 m/s.

Disregarding Air Drag, How Fast Must You Toss a Ball