During an experiment, your teacher dropped a tennis ball out the window. The ball hits the ground 3.0 second later. What was the ball's final velocity just before it hit the ground?

29.4m/s

Explanation:

Given.

Time (t) = 3.0s

Required

Determine the final velocity

Since, it's a vertical motion, we make use of the following formula to solve for the final velocity (v).

v = u + gt

Where u = 0, g = 9.8m/s² and t = 3s

v = 0 + 9.8m/s² *3s

v = 0 + 29.4m/s

v = 29.4m/s

Hence, the final velocity is 29.4m/s

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

unbalanced force

explanation: