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Danika picks up her physics book with a mass of 2.04 kg and throws it into a valley of 100 m with a speed of

Danika picks up her physics book with a mass of 2.04 kg and throws it into a valley of 100 m with a speed of 25 km/h[B]. What will be the speed of the book when he is 25 m from the bottom of the precipice?

a) Sketch the situation.

b) Answer the question using the formulas from the work and energy section.

c) Check your answer in b) with the kinematics formulas.

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