Question
A hockey puck is given an initial speed of $11 \mathrm{~m} / \mathrm{s}$. If it comes to rest in $60 \mathrm{~m}$, what's the coefficient of kinetic friction?
Step 1
We can use the equation of motion $v^2 = u^2 + 2as$ to find the acceleration (or in this case, deceleration) of the puck. Here, $v$ is the final velocity, $u$ is the initial velocity, $a$ is the acceleration, and $s$ is the distance. Show more…
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