Friday, January 8, 2010

What is the Calue speed if an object is standing still? What is the value for Velocity? Momentum?

speed= distance / time


but distance is zero


thus speed=0/time = 0!





speed of still object is zero!








velocity=displacement / time


displacement is zero for still object


thus velocity=0 /time = 0


value of velocity is also zero!!








momentum = mass X velocity


but velocity is zero


thus


momentum = mass X (0)=0


thus momentum = 0!!!

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