In a shuffleboard game, the puck slides a total of 12 m before coming to rest. If the coefficient ofkinetic friction between the puck and th

Question

In a shuffleboard game, the puck slides a total of 12 m before coming to rest. If the coefficient ofkinetic friction between the puck and the horizontal board is 0.28, what was the initial speed of thepuck?

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Neala 4 years 2021-08-29T21:30:34+00:00 1 Answers 26 views 0

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  1. King
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    2021-08-29T21:31:51+00:00
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    Answer:

    puck decelerates due to the kinetic frictional force μk mg

    Explanation:

    given data

    total distance = 12 m

    coefficient of kinetic friction = 0.28

    solution

    we will apply equation of motion that is

    v² – u² = 2 × a × s    …………….1

    we know acceleration will be

    a = \frac{-u^2}{2\times S}  

    Then we have

    Force = mass × acceleration   ……………..2

    m × \frac{-u^2}{2\times S} = -μk mg

    The puck decelerates due to the kinetic frictional force μk mg  

    and frictional force is negative as it opposes the motion.

    so we get initial velocity of the puck which is strike.

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