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23 Nov 2019
Two railroad freight cars with masses 130 {\rm Mg} and 140 {\rm Mg}approach with equal speeds of 0.360 {\rm m/s}. They collide, thelighter car rebounding opposite its original direction at 0.300{\rm m/s}.
(a) Find the velocity of the heavier car after the collision.Assume the original direction of the lighter car is positive.Express your answer to two significant figures and include theappropriate units.
(b)What fraction of the original kinetic energy was lost in thisinelastic collision?
Express your answer using two significant figures.
Two railroad freight cars with masses 130 {\rm Mg} and 140 {\rm Mg}approach with equal speeds of 0.360 {\rm m/s}. They collide, thelighter car rebounding opposite its original direction at 0.300{\rm m/s}.
(a) Find the velocity of the heavier car after the collision.Assume the original direction of the lighter car is positive.Express your answer to two significant figures and include theappropriate units.
(b)What fraction of the original kinetic energy was lost in thisinelastic collision?
Express your answer using two significant figures.
Deanna HettingerLv2
8 Aug 2019
