A ping-pong ball is moving along a track so that its position at time t is give by the vector , where x(t) = 2t2-6t+3 and y(t) is unknown. Both x and y are measured in meters, and t is measured in seconds. It is know that the velocity of the ping-pong ball in the y-direction is given by dy dt =te-2-3. (a) Find the time t, 0

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