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A hockey puck is hit on a frozen lake and starts moving with aspeed of 10.7 m/s. Five seconds later,its speed is 5.60 m/s.
a) What is its average acceleration?b) What is the average value of the coefficient of kineticfriction between puck and ice?c) How far does the puck travel during the 5.00 s interval?
Calculate the magnitude of the current density in the wire. Find out the work done by the hockey player on the puck. What is the change in kinetic energy of the puck.
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