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May 19th, 2020 
THE QUESTION:
A puck of mass m sliding across ice at initial speed v o experiences a frictional force of f = – kv.
Write and solve a differential equation of the pucks motion using Newtons 2 nd Law in order to find velocity as a function of time, v(t) and displacement as a function of time, x(t). Assume that at t = 0, x = 0 and v = v o .
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