Question

A ball player catches a ball 3.70s after throwing it vertically upward, what speed did he threw it

Answer 1

Tr = 3.70s/2 = 3.85 s. = Rise time.

Tr = -Vo/g = 3.85 s.
-Vo/-9.8 = 3.85
-Vo = -37.73
Vo = 37.73 m/s.