Stream Bank Flies
flight physical?
A dog wants to bathe in a river moves slowly. The dog can swim 2 m / s in calm water. The speed is 3 m / s. The distance directly in the flow is 50 m. If the dog itself is directly across the stream How long does it take to pass the course? What As the current downstream have made the dog when the dog is on the other side? What was the speed of the dogs from the bank where the dog has begun? T = A. D / S = 50 = 25 seconds b. m/2m/s C2 = A2 + B2 Is that correct? It is a right-angled triangle. ………………. Up is 2 m / s and is located on the side of 3 m / S. The resultant is the hypotenuse right? What should I do to get B and C?! Please. How I can know how the current dog was there? Moving?
Yes, the result is the net rate. v_r = √ ((2 m / s) ² + (3 m / s) ²) = 3.6 m / s know it takes 25 seconds to cross the river, so use Your 3 m / s to determine to what extent is carried downstream dog. Edit. The key here is the velocity vector can be decomposed into elements (which form a triangle right) d = V * t. So the total displacement v_r = t * = 3.6 m / s * = 90m 25s total river relocation v_R_across * t = 50 movement along the grain bank v_R_river = T * = 3m / s * 25 s = 75 million
Sporting Scene – Fly Fishing and River Bank Entomology P3.
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