Your school science club has devised a special event for
Chapter 2, Problem 78CP(choose chapter or problem)
Problem 78CP
Your school science club has devised a special event for homecoming. You’ve attached a rocket to the rear of a small car that has been decorated in the blue-and-gold school colors. The rocket provides a constant acceleration for 9.0 s. As the rocket shuts off, a parachute opens and slows the car at a rate of 5.0 m/s2. The car passes the judges’ box in the center of the grandstand, 990 m from the starting line, exactly 12 s after you fire the rocket. What is the car’s speed as it passes the judges?
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