College Physics - With Volume 1 and 2 Workbooks
3rd Edition
ISBN: 9780133970593
Author: Knight
Publisher: PEARSON
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Chapter 3, Problem 58GP
A kayaker needs to paddle north across a 100-m-wide harbor. The tide is going out, creating a tidal current flowing east at 2.0 m/s. The kayaker can paddle with a speed of 3.0 m/s.
a. In which direction should he paddle in order to travel straight across the harbor?
b. How long will it take him to cross?
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A kayaker needs to paddle north across a 100-m-wide harbor. The tide is going out, creating a tidal current flowing east at 2.0 m/s. The kayaker can paddle with a speed of 3.0 m/s. a. In which direction should he paddle in order to travel straight across the harbor? b. How long will it take him to cross?
Sheena can row a boat at 2.40 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at 1.90 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of 25.0° from the direction straight across the river. A) What is her speed with respect to the starting point on the bank? B) How long does it take her to cross the river? C) How far upstream or downstream from her starting point will she reach the opposite bank? If upstream, enter a positive value and if downstream, enter a negative value. D) In order to go straight across, what angle upstream should she have headed?
You wish to row straight across a 63 m wide river. You can row at a steady 1.3 m per seconds relative to the water, and the river flows at 0.57 meter per seconds.
a) what direction should you head?
B) how long will it take you to cross the river?
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