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15. Hannah and Violet are skating on frictionless ice. Violet pushes Hannah while they are both initially at rest. Violet has a mass of 19.5

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15. Hannah and Violet are skating on frictionless ice. Violet pushes Hannah while they are both initially at rest. Violet has a mass of 19.5 kg and Hannah has a mass of 22.0 kg. Two seconds into the push, Violet has a velocity of 1.5 m/s. a) What is the magnitude of the force Violet uses to push Hannah? [4 marks] b) What is Hannah's speed 2 seconds into the push? [5 marks]

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