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Physics, 31.03.2021 19:20 tifftiff22

4. A roller coaster starts at the top of a hill, 42 m above ground, with a velocity of 5.0 m/s. a. What is the velocity of the roller coaster of mass 830 kg, further down the track where it is 16 m
above ground? *neglecting friction [3]
b. The roller coaster having a velocity from part a, now travels over level track with a coefficient of
friction of 0.87 and eventually comes to rest. How long does the track need to be? Explain your
solution. [4]
c. Explain the energy changes throughout the rollercoaster’s trip, from the top of the hill to when it
stops. [3]

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4. A roller coaster starts at the top of a hill, 42 m above ground, with a velocity of 5.0 m/s. a....
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