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What angle must the boat be pointed at to cross the river to point B directly opposite point A? Note that ? is the angle made with the line joining A and B.

What angle must the boat be pointed at to cross the river to point B directly opposite point A? Note that ? is the angle made with the line joining A and B.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please double check my answers to 1 and 2, and help with 3. 

3. What angle must the boat be pointed at to cross the river to point B directly opposite point A? Note that ? is the angle made with the line joining A and B.

The diagram (not to scale) shows a boat used to cross a river from point A to point B. The boat rows with a speed relative to the water Uow = 2.8 m/s. A current flows parallel to the bank (ground) with a velocity iwg = –2.2ĵ m/s. Vow î A. В Part 1) The rower stops rowing the boat in the middle of the river and the boat comes to rest with respect to the water. In this part use: A. i direction B. -î direction c. ĵ direction D. -j direction Which direction will the boat drift according to an observer stationary at point A? D According to a person on the boat which direction is the person at point A moving?
Transcribed Image Text:The diagram (not to scale) shows a boat used to cross a river from point A to point B. The boat rows with a speed relative to the water Uow = 2.8 m/s. A current flows parallel to the bank (ground) with a velocity iwg = –2.2ĵ m/s. Vow î A. В Part 1) The rower stops rowing the boat in the middle of the river and the boat comes to rest with respect to the water. In this part use: A. i direction B. -î direction c. ĵ direction D. -j direction Which direction will the boat drift according to an observer stationary at point A? D According to a person on the boat which direction is the person at point A moving?
Part 2) Consider the original scenario. The rower keeps rowing non-stop with velocity Ūbw from the departure point A and aims to hit the bank on the opposite side at point B. What is the boat's velocity respect to the bank (ground)? Übg = 1.732 + 0 i m/s Your last answer was interpreted as follows: 1.732 Your last answer was interpreted as follows: 0
Transcribed Image Text:Part 2) Consider the original scenario. The rower keeps rowing non-stop with velocity Ūbw from the departure point A and aims to hit the bank on the opposite side at point B. What is the boat's velocity respect to the bank (ground)? Übg = 1.732 + 0 i m/s Your last answer was interpreted as follows: 1.732 Your last answer was interpreted as follows: 0
Expert Solution
Step 1

Both part 1 and part 2 correct 

Now, for part 3 

Sin θ = Vwg/Vbw = 2.2/2.8 

Sin θ = 0.786 

 θ = 51.81°

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