119_Physics ProblemsTechnical Physics

119_Physics ProblemsTechnical Physics - Chapter 5 P5.4 Fg =...

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Chapter 5 121 P5.4 Fm g g == weight of ball vv release = and time to accelerate = t : ai = v t v t v t ± (a) Distance xv t = : x v t vt = F H G I K J = 22 (b) Fj i pg g F Fv gt −= ±± Fi j p g g gt F =+ P5.5 m = 400 . k g , vi i = 300 . ± ms, j 8 800 100 . ± . ± ej t = s a v ij + t 500 . ± . ± . ±ms 2 Fa i j + m 250 . ± . ± N F =( )+ ( )= 559 .. . N P5.6 (a) Let the x -axis be in the original direction of the molecule’s motion. a t a a fi =+ − = + × =− × :. . 670 670 3 00 10 447 10 13 15 ms s 2 (b) For the molecule,
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