phy120_w08_hw4

phy120_w08_hw4 - Physics 120 Homework 4 1.RQ.65 It is...

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Unformatted text preview: Physics 120 - Homework 4 1.RQ.65 - It is reasonable to use the approximate (classical) formula for momentum in each of these situations except for (d). 1.RQ.67 (a) - = - f - - i = m -vx , 0, 0 - m vx , 0, 0 = m -2vx , 0, 0 p p p (b) - - |- | = mvx - mvx = 0 pf pi m = 0.4 kg , - = 38, 0, -27 m/s v - = m- = (0.4 kg) 38, 0, -27 m/s = 15.2, 0, -10.8 kg m/s p v |- | = p (15.2)2 + (0)2 + (-10.8)2 kg m/s = 18.6 kg m/s 1.HW.95 - 1.HW.99 - |- | = 0.9999c, m = 1.67 10-27 kg v = 1 1- = 1 = 70.7 1-(0.9999)2 - 2 v c |- | = m |- | = (70.7) (1.67 10-27 kg) (0.9999) (3 108 m/s) = 3.54 10-17 kg m/s p v 1.HW.104 (a) - CB = - C - - B = 2.55, 0.97, 0 kg m/s - 3.03, 2.83, 0 kg m/s = p p p -0.48, -1.86, 0 kg m/s - DC = - D - - C = 2.24, -0.57, 0 kg m/s - 2.55, 0.97, 0 kg m/s = p p p -0.31, -1.54, 0 kg m/s 1 - ED = - E - - D = 1.97, -1.93, 0 kg m/s - 2.24, -0.57, 0 kg m/s = p p p -0.27, -1.36, 0 kg m/s - F E = - F - - E = 1.68, -3.04, 0 kg m/s - 1.97, -1.93, 0 kg m/s = p p p -0.29, -1.11, 0 kg m/s (b) (c) The magnitude of the change in momentum is greatest between points B and C. 2 ...
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phy120_w08_hw4 - Physics 120 Homework 4 1.RQ.65 It is...

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