Question

A rock is thrown upwards at a 90o angle with a velocity of 15.8. What is the total hang time of the rock?

Answer 1

Below

Step-by-step explanation:

When ball reaches max height its velocity = 0 and it is 1/2 of the way through its roundtrip

vf = vo + at

0 = 15.8 - 9.81 t shows t = 1.61 s

for the roundtrip 2 x 1.61 = 3.22 s