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A river has width 0.5 km and flows from ...

A river has width 0.5 km and flows from West to East with a speed 30 km/hr. If a boatman starts sailing his boat at a speed 40 km/hr normal to bank, the boat shall cross the river in time –

A

0.6 minutes

B

0.75 minutes

C

0.45 minutes

D

3 minutes

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The correct Answer is:
B
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MOTION-KINEMATICS-EXERCISE 1 OBJECTIVE PROBLEMS
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  4. A boat man could row his boat with a speed 10 m/sec. He wants to take ...

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