A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 meters a second at the end of the catapult. Assuming the acceleration is constant, how far did it travel during those 2 seconds?

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  1. a = 42m/s / 2s = 21m/s^2
    s = 1/2 at^2

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