A student throws a 130 g snowball at 6.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average

Question

A student throws a 130 g snowball at 6.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall if the duration of the collision is 0.18 s?

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Đan Thu 5 years 2021-07-15T15:01:59+00:00 1 Answers 40 views 0

Answers ( )

  1. kimcuc
    0
    2021-07-15T15:03:01+00:00
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    Answer:

    4.7 N

    Explanation:

    130 g = 0.13 kg

    The momentum of the snowball when it’s thrown at the wall is

    p = mv = 0.13*6.5 = 0.845 kgm/s

    Which is also the impulse. From here we can calculate the magnitude of the average force F knowing the duration of the collision is 0.18 s

    p = F\Delta t

    F*0.18 = 0.845

    F = 0.845 / 0.18 = 4.7 N

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