A boat, whose speed in still water is 3.00 {\rm m/s}, must cross a 280-{\rm m}-wide river and arrive at a point 120 {\rm m} upstream from where it starts. To do so, the pilot must head the boat at a 45.0 {\rm \circ} upstream angle . What is the speed of the river's current?

answers

watching

182

views

For unlimited access to Homework Help, a Homework+ subscription is required.

Related questions

A boat, whose speed in still water is 2.70 m/s, must
cross a 280-m-wide river and arrive at a point 120 m
upstream from where it starts (see figure). To do so,
the pilot must head the boat at a 45.0Â° upstream
angle. What is the speed of the riverâs current?

Sheena can row a boat at 2.95 mi/h in still water. She needs tocross a river that is 1.26 mi wide with a current flowing at 1.46mi/h. Not having her calculator ready, she guesses that to gostraight across, she should head 60.0Â° upstream.
(a) What is her speed with respect to the starting point on thebank?

(b) How long does it take her to cross the river?

(c) How far upstream or downstream from her starting point will shereach the opposite bank?

(d) In order to go straight across, what angle upstream should shehave headed?

A 480-m-wide river has a uniform flow speed of 1.3 m/s through a jungle and toward the east. An explorer wishes to leave a small clearing on the south bank and cross the river in a powerboat that moves at a constant speed of 4.1 m/s with respect to the water. There is a clearing on the north bank 65 m upstream from a point directly opposite the clearing on the south bank. (a) At what angle, measured relative to the direction of flow of the river, must the boat be pointed in order to travel in a straight line and land in the clearing on the north bank? (b) How long will the boat take to cross the river and land in the clearing?

Weekly leaderboard

Home

Homework Help 3,900,000

Physics 110,000

A boat, whose speed in still water is 3.00 {\rm m/s}, must cross a 280-{\rm m}-wide river and arrive at a point 120 {\rm m} upstream from where it starts. To do so, the pilot must head the boat at a 45.0 {\rm \circ} upstream angle . What is the speed of the river's current?

Related textbook solutions

Physics: Principles with Applications

Related questions

Weekly leaderboard