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A position vs. time graph is shown below. If the average velocity from point A to point C is is 2 m/s then: A position vs. time graph is shown below. x t A. Average velocity from A to B is 2 m/s Which one is the corresponding velocity vs. time graph? B. Instantaneous velocity at A is 2 m/s v v C. Instantaneous velocity at B is 2 m/s v (A) t v t Which one is the corresponding acceleration vs. time graph? a a (A) (B) (C) What is the acceleration of the rocket when the engine is on? (taking vectors pointing up to be positive) A. -7.80 m/s2 B. 2.00 m/s2 C. 9.80 m/s2 t t t D. -9.80 m/s2 E. 11.8 m/s2 A model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s2 until its engines stop at an altitude of 150 m. What is the acceleration of the rocket when the engine is off? (taking vectors pointing up to be positive) A. -7.80 m/s2 B. 2.00 m/s2 C. 9.80 m/s2 D. -9.80 m/s2 E. 11.8 m/s2 t t A model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s2 until its engines stop at an altitude of 150 m. A velocity vs. time graph is shown below. a (C) (B)