A man standing on the edge of a cliff throws a stone straight up with initial speed u and then throw another stone straight down with same initial speed u and from the same position. Find ratios of speeds, two stones would attain, when they hit ground at the base of the cliff.

# A man standing on the edge of a cliff throws a stone straight up with initial speed u and then throw another stone straight down with same initial speed u and from the same position

**prasanna**#2

The stone thrown upward reaches back to the thrower with speed u.

Thus both the stones fall under the influence of gravity with same initial velocity u so the two stones will hit the ground with same speed. Hence ratio of their speed when they hit ground is 1