Question

A child in danger of drowing in a river is being carried downstream by a current that flows uniformly at 16/3
m/sec. The child is 600m from shore and 800m downstream of a helipad when the rescu
helicopter sets out and the helicopter follows the same direction throughout the motion. If the helicopter proceeds at max speed 80/3
-m/sec. with respect to air and air is blowing with velocity 4 m/s peroendicular to river flow

(1) Heading at what angle with the shore should the helicopter take off?
calculate the time taken by helicopter to reach the child.​

Answer 1

Answer:

50sec

Explanation:

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