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Mathematics 9 Online
OpenStudy (anonymous):

A particle moves alonf the x-axis, its position at time t given by x(t)=t/(1+t^2), t>=0, where t is measured in seconds and x in meters. find the acceleration at time 1. When is it 0? Graph the position, velocity, and acceleration functions for 0<=t<=4. When is the particle speeding up? When is the particle slowing down?

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