Question

A 60kg man jumps off a 30 foot building. Assuming he falls from rest and there is negligible air resistance, how long will it take him to reach the ground?​

Answer 1

1.37 seconds before.... splat !

Step-by-step explanation:

y = y0 + v0 t + 1/2 a t^2 y0 = 30 y = 0

v0 = 0 ( from rest)

a = - 32.2 ft/s^2

0 = 30 - 1/2 * 32.2 * t^2

t=1.366 seconds Note that mass is irrelevant.