Find v(t) to Match the Position vs. Time Graph

  

v(t) = + * t

x0 =

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Find the velocity of the toy Lamborghini as a function of time, v(t) (position is given in centimeters and time is given in seconds)Restart.  Note that you will enter a function for v(t) but what is displayed is the corresponding x(t) function.  Use the "check function" button to see your function against the actual position vs. time graph and use this as a guide for your analysis.

Why must you also enter a value for the initial x-position?  In other words, why can you not completely describe the motion with a velocity vs. time function?