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Physics, 04.02.2022 08:30 winterblanco

A child is pulling two red wagons, with the second one tied to the first by a (non-stretching) rope. Each wagon has a mass of 10 kg. If the child exerts a force of 30 N for 5.0 m, how much has the kinetic energy of the two-wagon system changed? a. 300 J
b. 150 J
c. 75 J
d. 60 J

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