Question

A swimmer reaches the other Bank of a flowing river exactly opposite to starting point if he was swimming at 2 km / he while maintaining 150° with the flow then time taken by him to cross the river 1 km wide is​

Answer 1

Answer:

1 hr

Explanation:

A swimmer reaches the other Bank of a flowing river exactly opposite to starting point if he was swimming at 2 km / he while maintaining 150° with the flow then time taken by him to cross the river 1 km wide is​

Swimming at 2 km/hr

Angle = 150°

Horizontal Speed = 2 * Cos150° = 2 * (-√3/2) = -√3 km /hr

Compensated the flow  ( as he reaches just opposite )

Vertical speed = 2 Sin 150° = 2 * (1/2) = 1 km/Hr

Resultant Speed = 1 km/hr

River Width = 1 km

Time taken = 1/1 = 1 hr

Answer 2

Answer:

Hello mate hear your answer

Explanation:

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