A boat is traveling upstream at 11 km/h with respect to the water of a river. The water is flowing at 7.0 km/h with respect to the ground. What are the (a) magnitude and (b) direction of the boat’s velocity with respect to the ground? A child on the boat walks from front to rear at 6.0 km/h with respect to the boat.What are the (c) magnitude and (d) direction of the child’s velocity with respect to the ground?

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Asked Feb 12, 2019
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A boat is traveling upstream at 11 km/h with respect to the water of a river. The water is flowing at 7.0 km/h with respect to the ground. What are the (a) magnitude and (b) direction of the boat’s velocity with respect to the ground? A child on the boat walks from front to rear at 6.0 km/h with respect to the boat.What are the (c) magnitude and (d) direction of the child’s velocity with respect to the ground?

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Expert Answer

Step 1

Taking, upstream direction -ve and downstream direction +ve.

 

Given,

Boat travel upstream, river travel downstream

Velocity of boat with respect to river, Vb/r= -11 km/h

Velocity of river, Vr=7.0 km/h

Velocity of child with respect to boat, Vc/b= 6 km/h

Step 2

Upstream velocity of boat = Vb

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Step 3

Child travel from front to rear of the boat.

 Velocity...

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