Question: Two objects move along a coordinate line. At the end of t second their directed distances from the origin, in feet, are given by s1

Two objects move along a coordinate line. At the end of t second their directed distances from the origin, in feet, are given by s1 = 4t - 3t2 and s2 = t2 - 2t, respectively.
(a) When do they have the same velocity?
(b) When do they have the same speed?
(c) When do they have the same position?

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