Problem: A river flows due south with a speed of 2.1 m/s . You steer a motorboat across the river; your velocity relative to the water is 4.1 m/s due east. The river is 760 m wide.What is the magnitude of your velocity relative to the earth?How much time is required to cross the river?How far south of your starting point will you reach the opposite bank?What is the direction of your velocity relative to the earth?

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Problem Details

A river flows due south with a speed of 2.1 m/s . You steer a motorboat across the river; your velocity relative to the water is 4.1 m/s due east. The river is 760 m wide.

What is the magnitude of your velocity relative to the earth?

How much time is required to cross the river?

How far south of your starting point will you reach the opposite bank?

What is the direction of your velocity relative to the earth?

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What scientific concept do you need to know in order to solve this problem?

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.