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A fully loaded cart at the top of the roller coaster has a mass of 755kg and a speed of 10 m/s. From points A to B, the car is boosted by a chain underneath the track. if the car is travelling 28.0 m/s at Point B, how much work did the track do on the cart between points A and B. Point is at the bottom of 2 hills, point B is at the top of the second hill. The first hill is 80.0m tall. The second hill that point B is at the top of is 50.0m tall.
Sagot :
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