14-06-2017
Physics

contestada

a roller coaster is traveling at 13m/s when it approaches a hill that is 400m long. heading down the hill, it accelerates 4.0m/s^2. what is the final velocity of the roller coaster? round your answer to the nearest whole number.

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kyledwalt kyledwalt

14-06-2017

We will apply the equation:
2as = v² - u²
v = √(2as + u²)
v = √(2 x 4 x 400 + 13²)
v = 58 m/s

hope this helps

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