physics
posted by Indira on .
A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?

In the vertical direction:
hf=hi+gt
0=hi9.8t solve for hi 
58meters

91 meter