A toy car's movement is measured using photogates. The car's position-time graph is shown below.

Which of the following statements describes the velocity of this car?

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.