Gravitational acceleration

Classical Mechanics Level 2

Object \(A\) is thrown horizontally from a height of \(H.\) At the moment it passes point \(p\) which is \(4\) m above the ground, object \(B\) is dropped from point \(q\) which is \(2\) m above the ground. If both objects touch the ground at the same time, what is \(H\) (in m)?

Gravitational acceleration is \(g = 10 \) m/s\(^{2}.\)

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