A helicopter on flood relief mission, flying horizontally with a speed u at an altitude H, has to driop a food packet for a victim standing on the ground. At what distance from the victim should the packet be dropped? The victim stands in the vertical plane of the helicopters's motion.

Explanation

To solve the problem of determining at what distance from the victim the food packet should be dropped from a helicopter flying horizontally, we can follow these steps:

### Step 1: Understand the scenario
The helicopter is flying horizontally at an altitude \( H \) with a speed \( u \). When the food packet is dropped, it will take some time \( T \) to reach the ground. During this time, the packet will also move horizontally due to the helicopter's speed.

### Step 2: Calculate the time of flight \( T \)
The time \( T \) taken for the packet to fall from height \( H \) can be calculated using the second equation of motion for free fall:
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