Q1 a father m 70 kg and son m 45 kg are standing facing, Ask an Expert

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Q1. A father (m = 70 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on father and finds himself moving backward at 3 m/s after they have separated. How fast would the father be moving?

Q2. What is an acceleration of two falling sky divers (mass 100.0 kg including parachute) when the upward force of air resistance is equivalent to one-fourth of their weight?

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