A hockey puck on a frozen pond with an initial speed of 13.7 m/s stops after sliding a distance of 216.9 m. Calculate the average value of the coefficient of kinetic friction between the puck and the ice.

0.04

Explanation:

From

Here m is mass, a is acceleration,  is the coefficient of kinetic friction and g is acceleration due to gravity.

Making the subject of the formula

From kinematics, we know that

Here, v is final speed, u is initial speed, a is acceleration and s is distance moved.

Making a the subject of the formula then

Since it stops, the final velocity is 0 while the initial speed is given as 13.7 m/s

Substituting 0 for v, 13.7 for u, 216.9 m for s then

Taking g as then using the formula

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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