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Physics, 12.01.2020 14:31 emmilicious

4. two kids are roller skating. amy, with a mass of 55 kg, is traveling forward at 3 m/s. jenny, who has a mass of 40 kg, is traveling in the opposite direction at 5 m/s. they crash into each other and hold onto each other so that they move as one mass. how fast are they traveling?

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4. two kids are roller skating. amy, with a mass of 55 kg, is traveling forward at 3 m/s. jenny, who...
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