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Physics homework problem...please help!
A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = b*t^2 + c*t^3, where b= 2.60 and c= 0.110 .
How long after starting from rest is the car again at rest?
i made the x(t) = 0 and i solved for t, and i got t = 0 and t = 23.6364, but when i put in t = 23.6364 in the solution it was wrong..can someone please help me...did i do this wrong?
Homework Statement
A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = b*t^2 + c*t^3, where b= 2.60 and c= 0.110 .
Homework Equations
How long after starting from rest is the car again at rest?
The Attempt at a Solution
i made the x(t) = 0 and i solved for t, and i got t = 0 and t = 23.6364, but when i put in t = 23.6364 in the solution it was wrong..can someone please help me...did i do this wrong?