a stone is dropped from the edge of a roof. find the distance travelled by the stone in 2 s after the stone was released.
Here,
Initial velocity, u = 0
Acceleration due to gravity is, g = 9.8 m/s2
Using,
S = ut + ½ at2
=> S = 0 + (1/2)(9.8)(22)
=> S = 19.6 m