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A Roller-Coaster Car Is Moving at 20 M/s Along a Straight

Question 20

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A roller-coaster car is moving at 20 m/s along a straight horizontal track. What will its speed be after climbing the 15-m hill shown in the figure, if friction is ignored? A roller-coaster car is moving at 20 m/s along a straight horizontal track. What will its speed be after climbing the 15-m hill shown in the figure, if friction is ignored? A) 17 m/s B) 7 m/s C) 5 m/s D) 10 m/s E) 14 m/s


A) 17 m/s
B) 7 m/s
C) 5 m/s
D) 10 m/s
E) 14 m/s

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