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Unformatted text preview: momentum is conserved . So, considering just 1D motion for now, we can say m A ,1 v A ,1 + m B ,1 v B ,1 + K + m X ,1 v X ,1 = m A ,2 v A ,2 + m B ,2 v B ,2 + K + m X ,2 v X ,2 where subscripts A, B, C etc label different objects and 1 and 2 refer to times immediately before and immediately after the collision respectively. Now consider the following cases: 1. Car crashes into stationary truck, they stick together The car has mass m = 2000 kg and velocity v 1 = 20 m s1 . The truck is initially stationary and has mass M =8000 kg. What is the velocity, v 2 , of the tangled wreckage immediately after the collision? Is this an elastic, or inelastic collision (is kinetic energy conserved)? v 1 Before v 2 After...
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 Fall '09
 LIND

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