- #1
physstudent1
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Homework Statement
A turtle crawls along a straight line, which we will call the x-axis with the positive direction to the right. The equation for the turtle's position as a function of time is x(t)=50.0cm+(2.00cm/s)\,t-(0.0625cm/s^2)t^2
At what time t is the turtle third time a distance of 10.0 {\rm cm} from its starting point?
Homework Equations
The Attempt at a Solution
Ok the first question asked for the first time, the second question was the second time, now it wants a third time, however its a parabola I don't see how it could have a third time.
I got .5(-.125)t^2+2t-10 for my equation did the quadratic equation and got 6.20seconds and 25.8 seconds. How can it possibly have a third time...? I don't know how to enter no solution into the program where we send our homework in we use Mastering Physics.