a) What is the momentum of a 10,000-kg truck whose speed is 30 m/s? b) What will be the speed of another 5,000-kg truck in order to have same momentum?
(a)
"p=mv=10000\\ kg\\cdot30\\ \\dfrac{m}{s}=3\\cdot10^5\\ \\dfrac{kgm}{s}."(b)
"v=\\dfrac{p}{m}=\\dfrac{3\\cdot10^5\\ \\dfrac{kgm}{s}}{5000\\ kg}=60\\ \\dfrac{m}{s}."
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