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Unformatted text preview: v wind = v 737 , you never get back. 2. (a) (b) In the exam, 5.8 cm (unscaled) correspond to 40 cm on the scale; the scale factor is 40/5.8 = 6.9. a 2 Δ t 2 = 5.3 cm (unscaled). a 2 = 5.3 x 6.9 cm /0.040s 2 = 913 cm/s 2 3. (a) Third Law pairs f BonA & f AonB , N BonA & N AonB (b) x-direction: F - f BonA = m A a A y-direction: N BonA – W EonA = (c) N BonA = W EonA = m A g = 9.8 N f BonA = μ K N BonA K = f BonA / N BonA = (F – m A a A )/ N BonA = (5.0 N – 0.5 N)/9.8 N = 0.46...
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- Fall '07
- mechanics, vector diagram