95_Physics ProblemsTechnical Physics

95_Physics ProblemsTechnical Physics - 96 P4.32 Motion in...

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96 Motion in Two Dimensions P4.32 The satellite is in free fall. Its acceleration is due to gravity and is by effect a centripetal acceleration. ag c = so v r g 2 = . Solving for the velocity, vr g == + = × 6 400 600 10 8 21 7 58 10 33 ,. . af ej e j m m s m s 2 v r T = 2 π and T r v T × × F H G I K J = 2 27 0 0 01 0 758 10 580 10 1 96 7 3 3 3 3 , . . .. . m ms s s min 60 s min Section 4.5 Tangential and Radial Acceleration P4.33 We assume the train is still slowing down at the instant in question. a v r a v t aa a c t ct =− =+ = + 2 3 1 22 129 40 0 10 15 0 0741 . . . . ±ms km h m km s 2 h 3600 s 2
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