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7 June, 17:29

A roller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4.0 m/s2. What is the final velocity of the roller coaster? Round your answer to the nearest whole number.

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  1. 7 June, 19:14
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    We will apply the equation:

    2as = v² - u²

    v = √ (2as + u²)

    v = √ (2 x 4 x 400 + 13²)

    v = 58 m/s
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