50_Physics ProblemsTechnical Physics

50_Physics ProblemsTechnical Physics - Chapter 2 P2.72 h =...

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Chapter 2 51 P2.72 h = 600 . m , v boy ms = 200 v x t v x vx xh == = + sin θ boy boy A 22 12 ch . However, xvt = boy : = + = + v vt vt h t t boy 2 boy 22 2 2 4 43 6 c h . (a) tv sm s 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 0.32 0.63 0.89 1.11 1.28 1.41 1.52 1.60 1.66 1.71 af bg FIG. P2.72(a) (b) From problem 2.71 above, a hv t = + = + = + 2 32 2 2 144 6 boy 2 boy 2 boy 2 c h c h . ta s 0 0.5 1 1.5 2 2.5 3. 3.5 4. 4.5 5 0.67 0.64 0.57 0.48 0.38 0.30 0.24 0.18 0.14 0.11 0.09 2 ej FIG. P2.72(b) P2.73 (a) We require xx sk = when tt =+ 100 . xt t x t k k kk k = = += = 1 2 350 1 2 490 100 1183
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