The question is "A roller coaster at a popular amusement park has a portion of the track that is similar to the diagram provided. Assuming that the roller coaster is friction less, find its velocity at the top of the loop.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

Vi = 0 m/s

Vf = ?

Distance from bottom to the very top is 70m

Distance from bottom to the loop is 30m

2. Relevant equations

Ek = 1/2m x v^2?

Eg = m x g x Delta h?

3. The attempt at a solution

What do I have to find first in order to find the velocity?

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# How would I solve this?

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