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Figure below shows a simplified route of a roller coaster. Initially, the cart runs down from the starting point. Neglecting the effects of friction, find its speed at (a) the "valley" V (b) at the top of second hill L (c) If friction is taken in consideration, will the answers be smaller or larger than that found in part (a) and (b)?

Figure below shows a simplified route of a roller coaster. Initially, the cart runs down from the starting point. Neglecting the effects of friction, find its speed at (a) the "valley" V (b) at the top of second hill L (c) If friction is taken in consideration, will the answers be smaller or larger than that found in part (a) and (b)?

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Figure below shows a simplified route of a roller coaster. Initially, the cart runs down from the starting point. Neglecting the effects of friction, find its speed at (a) the "valley" V (b) at the top of second hill L (c) If friction is taken in consideration, will the answers be smaller or larger than that found in part (a) and (b)?

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