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a.

  • p= mv
  • p= (1000 kg)(20 m/s) northward
  • p= 20000 kg•m/s northward

b.

  • p= mv
  • p= (54 kg)(2 m/s) westward
  • p= 108 kg•m/s westward

c. If the velocity doubles, then

  • p=mv
  • 200 kg•m/s= mv
  • 2(200 kg•m/s)= m(2v)
  • 400 kg•m/s= m(2v)

If the mass triples, then

  • p=mv
  • 200 kg•m/s= mv
  • 3(200 kg•m/s)= (3m)v
  • 600 kg•m/s= (3m)v

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