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September 20, 2014

September 20, 2014

Posted by **Chad** on Saturday, April 6, 2013 at 2:33pm.

- physics -
**Henry**, Monday, April 8, 2013 at 9:01pmV1 = 4 * 1.852km/h = 7.408 km/h.[65o].

d1 = 3h * 7.408km/h = 22.224 km/h[65o].

V2 = 5 * 1.852km/h = 9.26 km/h.[270o].

d2 = 9.26km/h * 2h = 18.52 km[270o].

R = d1 + d2.

R = 22.224km[65o] + 18.52 km[270o]

X = 22.224*cos65 = 9.39 km.

Y = 22,224*sin65 + 18.52*sin270=1.62 km

tanA = Y/X = 1.62/9.39 = 0.17271

A = 9.8o

R = X/cosA = 9.39/cos9.8=9.53 km[9.8o].

= Resultant.

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