The path of a roller coaster is given by the vector function 7(t) = (x(t), y(t), z(t)). Which of the following descriptions matches the velocity and acceleration functions i(t) = 7'(t) and a(t) =7"(t) at the moment when the car reaches the top of a loop-the-loop (as pictured below)? %3D O (t) is horizontal pointing in the opposite direction of travel a(t) points toward the center of the loop O (t) is horizontal pointing in the direction of travel a(t) points toward the center of the loop O 3(t) is horizontal pointing in the opposite direction of travel a(t) points away from the center of the loop O (t) is horizontal pointing in the direction of travel a(t) points away from the center of the loop

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