Question

a stone is dropped from a cliff 19.6m high what will be its speed when it reaches the ground

Answer 1

Explanation:

Let t1 and t2 be the time taken by the stone to travel (19.6 -1) = 18.6m and 19.6 m. respectively. Hence the time taken to travel the last metre , t2-t1=2-1.948=0.052 s.