46_Physics ProblemsTechnical Physics

46_Physics ProblemsTechnical Physics - Chapter 2 (c) v...

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Chapter 2 47 (c) v final ms = 184 txva 0 Launch 0.0 0 80 +4.00 #1 End Thrust 10.0 1 000 120 +4.00 #2 Rise Upwards 22.2 1 735 0 –9.80 #3 Fall to Earth 41.0 0 –184 –9.80 P2.63 Distance traveled by motorist = 15 0 . ms af t Distance traveled by policeman = 1 2 200 2 . m s 2 ch t (a) intercept occurs when 15 0 2 . tt = , or t = 15 0 s (b) vt officer m s m s 2 () = = 300 .. (c) xt officer m s m 2 = = 1 2 225 2 . P2.64 Area A 1 is a rectangle. Thus, Ah wv t xi 1 == . Area A 2 is triangular. Therefore Ab h t v v xx i 2 1 2 1
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