# Answer to Question #10556 in Mechanics | Relativity for sunil kumar

Question #10556

A stone falls from a tower, height 100m.At same time another stone through with 4.5m\s velocity.when they meet and which height.

Expert's answer

A stone falls from a tower, height 100m. At same time another stone through with 4.5m\s velocity. when they meet and which height.

The answer depends on a direction the second stone was thrown.

Anyhow, the first stone flight time is

t = √(2H/g) = √(2·100/9.8) ≈ 4.5175 s.

If the second stone was thrown horizonatally down, it reached the ground earlier then the first one, so the meeting time is 4.5175s and meeting height is 0m.

The answer depends on a direction the second stone was thrown.

Anyhow, the first stone flight time is

t = √(2H/g) = √(2·100/9.8) ≈ 4.5175 s.

If the second stone was thrown horizonatally down, it reached the ground earlier then the first one, so the meeting time is 4.5175s and meeting height is 0m.

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