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Homework Help: Need help

  1. Jul 4, 2005 #1
    If a force accelerates 4.5 kg at 40 m/s ^2, that same force would accelerate 18 kg how much?
  2. jcsd
  3. Jul 4, 2005 #2


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    Force equals mass times acceleration! (F= ma)

    If m= 4.5 kg and a= 10 m/s2, what is F?

    Now, using that same force, but m= 18kg, solve F= ma for a.

    A slightly more sophisticated method is to say m1a1= F= m2a2.

    That is (4.5)(10)= (18)(a).
  4. Jul 4, 2005 #3

    Thanks again for the instruction, that made more sense to me. Thanks in advance.
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