A block is released from rest at the top of an incline


A block is released from rest at the top of an incline, which makes a 30° angle with the horizontal. The incline is 12m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, μk, between the block and the incline?

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Physics: A block is released from rest at the top of an incline
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