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Math: Kinetics Questions

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Questions:
1. A hockey puck is hit on a frozen lake and starts moving with a speed of 13.1 m/s. Five seconds later, its speed is 6.9 m/s. What is its average acceleration? The acceleration of gravity is 9.8 m/s. Answer in units of m/s/s.
2. What is the average value of the coefficient of kinetic friction between puck and ice?
3. How far does the puck travel during this 5 s interval? Answer in units of m.

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The expert examines kinetic questions of a frozen lake.

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