Vector Ski
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physics help (vector addition)?
you are riding on a jet ski at an angle of 35 degrees upstream on a river flowing with a speed of 2.8 m/s. if your velocity relative to the ground is 9.5 m/s at an angle of 20.0 degrees upstream what is the speed of the jet ski relative to the water?)
If you were to draw both of the vectors out with their respective angles, the vector sum of the vectors going upstream would give you the relative speed.
V(jet ski) = V(s1) cos(Ɵ1) = (2.8)cos(35°) = 2.30 m/s
V(ground) = V(s2) cos(Ɵ2) = (9.5)cos(20°) = 8.93 m/s
Speed of jet ski relative to water = V(jet ski) + V(ground)
= 11.23 m/s
3 13 09 slalom part 2
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