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According to 2nd law in my Textbook, Rate of Change of Momentum is directly proportional to magnitude of net force and is in the direction of the Net Force.

This translates to: $F \propto Δp / Δt$

Where

  • F = Net force
  • Δp = Change in momentum
  • Δt = Change in time

My book states it slightly differently, as $F = Δp / Δt$

Is this wrong, or have I made a mistake of interpreting it instead?

Qmechanic
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user352935
  • 13

1 Answers1

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The exact law is:

$$ \mathbf{F}=\frac{d\mathbf{p}}{dt} $$

so the proportionality constant is 1.

DrManhattan
  • 977