8. Which would take more force to stop in 10 seconds: an 8 kg ball rolling at 0.2 m/s, or a 4 kg ball rolling at 1.0 m/s?

Question

8. Which would take more force to stop in 10 seconds: an 8 kg ball rolling at 0.2
m/s, or a 4 kg ball rolling at 1.0 m/s?

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Ladonna 1 week 2021-07-22T11:33:23+00:00 1 Answers 2 views 0

Answers ( )

    0
    2021-07-22T11:34:48+00:00

    Force = mass • acceleration

    1) Find acceleration
    -) 8kg ball
    a= v/t
    a= .2/ 10 = .02 m/s^2
    Force = 8kg • .02 = .16N

    -) 4kg ball
    a= v/t
    a= 1.0/ 10 = .1 m/s^2
    Force = 4kg • .1 = .4N

    Answer: The 8kg ball would need more force because it requires .16N, while the 4kg only need .4N .

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