anonymous
  • anonymous
3. A force F = (4, -7, 3), in Newtons, pulls a sled through a displacement s = (5, -6, -1) in metres. How much work is done on the sled by the force?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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cwrw238
  • cwrw238
work done = force * displacemant
cwrw238
  • cwrw238
so multiply the two vectors: F * s
anonymous
  • anonymous
so just (4, -7, 3)*(5, -6, -1) -- no weird square rooting or anything?

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cwrw238
  • cwrw238
wait its a while since i did mechanics - let me check that out
anonymous
  • anonymous
okay :)
cwrw238
  • cwrw238
ok the work done = scalar or dot product of the vectors which is 4*5 + -7*-6 + 3*-1

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