Problem: A river flows due south with a speed of 2.0 m/s. A man steers a motorboat across the river. The river is 800 m wide.In which direction should the motorboat head in order to reach a point on the opposite bank directly east from the starting point? (The boats speed relative to the water is 4.2 m/s.)What is the velocity of the boat relative to the earth?How much time is required to cross the river?

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Problem Details

A river flows due south with a speed of 2.0 m/s. A man steers a motorboat across the river. The river is 800 m wide.

In which direction should the motorboat head in order to reach a point on the opposite bank directly east from the starting point? (The boats speed relative to the water is 4.2 m/s.)

What is the velocity of the boat relative to the earth?

How much time is required to cross the river?

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Our tutors have indicated that to solve this problem you will need to apply the Relative Velocity in 2D concept. You can view video lessons to learn Relative Velocity in 2D. Or if you need more Relative Velocity in 2D practice, you can also practice Relative Velocity in 2D practice problems.