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A force of 40.0 N is required to start a 5.0-kg. box moving across a horizontal concrete floor.
(a) What is the coefficient of static friction between the box and the floor?
(b) If the 40.0 N-force continues, the box accelerates at 0.70 m/s^2. What is the coefficient of kinetic friction?
After the interaction, the particles (which can't be distinguished) are observed moving at angles 55.3° and 34.7°, both angles being measured with respect to the original direction of motion. Illustrate what are the final speeds of the particles?..
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