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A boy on a 2.2kg skateboard initially at rest tosses a 7.9kg jug of water in the forward direction.

If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass.
Answer in units of kg.

Question ID
524032

Created
April 1, 2011 8:49pm UTC

Rating
0

URL
https://questions.llc/questions/524032

Answers
4

Views
3844

4 answers

  1. initial momentum= final momentum
    0=(M+2.2).56+7.9(-3.2)

    solve for M

    Answer ID
    524055

    Created
    April 1, 2011 10:02pm UTC

    Rating
    1

    URL

  2. 24.048 kg

    Answer ID
    644457

    Created
    December 9, 2011 12:38am UTC

    Rating
    -11

    URL

  3. You’re wrong

    Answer ID
    2113017

    Created
    December 17, 2020 9:37pm UTC

    Rating
    0

    URL

  4. 42.942

    (If you have 2.3 kg skate 8.4kg jug.... = 42.5)

    Answer ID
    2353322

    Created
    April 3, 2022 9:21pm UTC

    Rating
    0

    URL

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