Trajactories

Two guns are mounted on the top of a hill at height 10m10m. They fire one shot each with the same speed 53 ms15\sqrt{3}\ ms^{-1} First gun fires at time t=0t=0 upwards at an angle 60°60° with the horizontal. After that firing, at time Δ\Delta second gun fires in horizontal direction. If the bullets fired by two guns collide with each other at some time in future, calculate the time interval Δ\Delta between the two firings.

Details and assumptions:- 1)Take g=10m/sg=10m/s

2)Everything is measured in SI units

3)This question is taken from an old IIT test

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