Energy Conservation With Conservative Forces: The figure shows a famous roller coaster ride. You can ignore friction. If the roller coaster leaves point Q from rest, what is its speed at the top of the 25-m peak (point S)
A. 10 m/s
B. 22 m/s
C. 44 m/s
D. 62 m/s
E. 120 m/s
Answer: B
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