a 0.45 kg soccer ball changes its velocity by 20.0 m/s due to a force applied to it in 0.10 seconds. what force was necessary for this chang

Question

a 0.45 kg soccer ball changes its velocity by 20.0 m/s due to a force applied to it in 0.10 seconds. what force was necessary for this change in velocity?

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Mít Mít 4 years 2021-08-07T19:29:22+00:00 1 Answers 69 views 0

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  1. Doris
    0
    2021-08-07T19:30:43+00:00
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    Answer: 90N

    Explanation:

    Mass of ball = 0.45 kg

    Change in velocity = 20.0 m/s

    Time = 0.10 seconds

    Force required for change = ?

    Since force refers to the change in momentum per unit time, hence

    Force = Momentum / Time

    i.e Force = Mass x (change in velocity / time)

    Force = 0.45kg x (20.0m/s /0.10second)

    = 0.45kg x (200 m/s^2)

    = 90N

    Thus, 90N of force was necessary for this change in velocity

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