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###### A rock is thrown upwards from the ground with initial velocity V_0 at same instant is dropped from rest a distance y_0 above the ground directly above the first rock find the time when the two rocks collide in terms of the given quantities and acceleration of gravity g. find height from the 2nd rock must be dropped so that two rocks collide at the highest point attained by the 1st rock

a rock is thrown upwards from the ground with initial velocity V_0 at same instant is dropped from rest a distance y_0 above the ground directly above the first rock find the time when the two rocks collide in terms of the given quantities and acceleration of gravity g. find height from the 2nd rock must be dropped so that two rocks collide at the highest point attained by the 1st rock

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