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Dominick Magofna08-31-2016NS101-02Mrs. LibanQFT Chapter 21.An insect inside a bus flies from the back toward the front at 2 m/s. The bus is moving in a straight line at 20 m/s. What is the speed of the insect?2.Disregarding air friction, describe all forces acting on a bullet shot from a rifle to the air.3.Can gravity act in a vacuum? Explain.