Question

What is the average speed of a stone falling from the roof of a 6 m high house?

Answer 1

Below

Step-by-step explanation:

Speed at beginning = 0

speed at bottom = ?

d = 1/2 at^2

6 = 1/2 (9.81)(t^2 ) shows t = 1.1 s

vf = at = 9.81 ( 1.1) = 10.85 m/s

Average = ( 10.85 - 0) / 2 = 5.42 m/s average