posted by Jacky .
A ball is thrown vertically upward with a speed of 26.1 m/s from a height of 2.1 m.How long does it take to reach its highest point? The acceleration of gravity is 9.81 m/s2.
Answer in units of s
Tr = (V-Vo)/g = (0-26.1)/-9.81 = 2.66 s.
= Rise time.