anonymous
  • anonymous
momentum
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
momebtum of 15000 pound car driving at 80 kmph
anonymous
  • anonymous
i think it is p = mv so 15000 * 80 = 12,000,000
anonymous
  • anonymous
Do you happen to remember the equation for momentum? If not, I'd be glad to write it on the board.

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anonymous
  • anonymous
|dw:1378715704990:dw|
anonymous
  • anonymous
Good! Do you remember what m and v represent?
anonymous
  • anonymous
mass and velocity
anonymous
  • anonymous
And that's correct about m and v, what should we use for the mass in this problem?
anonymous
  • anonymous
kg and m/s for velocity
anonymous
  • anonymous
Yes, so which of our given numbers is related to mass? (we'll need to convert units a little)
anonymous
  • anonymous
oh ya my bad 6804 kg and 50 mph
anonymous
  • anonymous
Are pounds or kmph more closely related to kg?
anonymous
  • anonymous
oh okay! :)
anonymous
  • anonymous
|dw:1378716356922:dw|
anonymous
  • anonymous
so 6800 * 50 = 340000 done problem solved
anonymous
  • anonymous
So our mass is already given in the correct units, kg. But then we need to convert the velocity, 50mph, into meters per second. Since those are the standard units. Also no quite, we need to convert 50mph to m/s first. Do you already have a conversion factor for mph to m/s, or should we work that out?
anonymous
  • anonymous
not quite* Do you already have a conversion factor for mph to m/s, or should we work that out?
anonymous
  • anonymous
22.352 mps
anonymous
  • anonymous
Great!
anonymous
  • anonymous
|dw:1378716605498:dw|
anonymous
  • anonymous
152320 final answer
anonymous
  • anonymous
Awesome! I agree
anonymous
  • anonymous
and the units for momentum are kg*m/s
anonymous
  • anonymous
thx
anonymous
  • anonymous
|dw:1378716743185:dw|
anonymous
  • anonymous
Your welcome! :)

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