A girl operates a radio-controlled model car in a vacant parking lot. The girls position is at

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A girl operates a radio-controlled model car in a vacant parking lot. The girl’s position is at the origin of the xy coordinate axes, and the surface of the parking lot lies in the x-y plane. She drives the car in a straight line so that the x coordinate is defined by the relation x(t) = 0.5t3 - 3t2 + 3t + 2, where x and t are expressed in meters and seconds, respectively. Determine


(a) When the velocity is zero, 


(b) The position and total distance travelled when the acceleration is zero.image

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Vector Mechanics For Engineers Statics And Dynamics

ISBN: 9781259977206

12th Edition

Authors: Phillip J Cornwell, E Russell Jr Johnston, David Mazurek, E Russell Johnston Jr, Ferdinand P Beer, Brian

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