Perpendicular 7005
A speedboat moves relative to the water at a constant speed of 13 m/s. The speed of the water current in the river is 5 m/s
a) At what angle concerning the water current must the boat sail to keep moving perpendicular to the banks of the river?
b) At what speed does the boat approach the opposite bank?
a) At what angle concerning the water current must the boat sail to keep moving perpendicular to the banks of the river?
b) At what speed does the boat approach the opposite bank?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- geometry
- vector
- arithmetic
- addition
- subtraction
- planimetrics
- right triangle
- triangle
- goniometry and trigonometry
- sine
- cosine
- arccosine
Units of physical quantities:
Themes, topics:
Grade of the word problem:
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