Question

a body is dropped from a roof of a building 10m high calculate the time of fall and their speed with which it hits the ground take g= 10 M per second square

Answer 1

h= \frac{1}{2}*g t^{2}  using this formula we get the time of fall is square root of 2 and speed is 14.14

Answer 2

time = square root of{ (2×ht)/g}
therefore 1.414

velocity = square root of (2×ht×g)
therefore = 14.14