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2. A 1.0 kg roller coaster is at the top of a 25m hill, and has a velocity of 8 m/s.

a. Determine the velocity of the roller coaster when it is halfway down the hill, at height of 12.5 m. (Ignore Friction)

b. What is the velocity of the roller coaster at the bottom of the hill assuming a force due to friction of 3.0 N, and the length of the hill is 45.0 m.

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2 A 10 kg roller coaster is at the top of a 25m hill and has a velocity of 8 ms a Determine the velocity of the roller coaster when it is halfway down the hill class=

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