Calculating Momentum: Learn the Formula and Solve a Sprinter's Momentum Question

Thread starter xLuvux
Start date Jan 16, 2012
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Momentum

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The momentum of a 45kg sprinter running at 12 m/s is calculated using the formula p = m * v, resulting in p = 540 kg⋅m/s. The importance of including units in the final answer is emphasized, confirming that the correct unit is kg⋅m/s. Participants express uncertainty about the calculation and the necessity of units, but receive confirmation that their approach is correct. The discussion reinforces the significance of proper unit notation in physics calculations. Overall, the calculation and unit inclusion are validated.

Jan 16, 2012

xLuvux

1. A 45kg sprinter runs at 12 m/s for a short distance. What is his momentum?
2. p=m*v
3. p= (45kg)(12m/s)
p= 540

I'm not sure if I did it right. & am I supposed to include unit(s) after 540?

Last edited: Jan 16, 2012

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Jan 16, 2012

Delphi51

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Looks good! Yes, the units should be included. kg⋅m/s

Jan 16, 2012

xLuvux

Delphi51 said:

Looks good! Yes, the units should be included. kg⋅m/s

Thank you.

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