Question

A stone is dropped from roof of building takes 5 seconds to reach the ground the sound of striking is heard about 5.4 seconds after the stone is dropped the velocity of sound is

Answer 1

the gravitational force attract anything with velocity 9.8m\s^2. so the distance between stone and earth is 9.8×5 =49m and the velocity of speed is 49÷5.4=9.074