A stоne is thrоwn hоrizontаlly with аn initiаl speed of 10 m/s from the edge of a cliff. A stopwatch is used to measure the time interval for the stone to travel from the top of the cliff to the level of the bottom to be 4.3 s. What is the height of the cliff if air resistance is negligible? Use g = 9.80 m/s2