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answer with explanation 14. A roller coaster cart is travelling 2.0 m/'s when it is 30 m vertically off the ground. If the average force

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14. A roller coaster cart is travelling 2.0 m/'s when it is 30 m vertically off the ground. If the average force of friction is equal to one-fifth its weight, with what speed will it reach the ground if the distance travelled by the cart to the ground on the track is 50 m? [4] 2.0 m/s* 50 m 30 m

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