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The position function x of f of a particle moving along an x axis is x equals 4.0-6.0 t2 with x in meters and t in seconds At what time and where does the particle momentarily stop?
Toyvo2
x = 4 - 6 t2
Speed = (dx/dt) = - 12 t
Speed = 0 when t = 0
x(0) = 4
The particle stops at [ t = 0 ], located at [ x = 4 ].
The physical reality is: The particle started at [ x = 4 ], and once it started moving, it never stopped.
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