At last collision probability is analyzed.

最后对碰撞概率进行定量分析。

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And then there is a case of which we have seen several examples last time of inelastic collisions, when you lose kinetic energy, so this is an inelastic collision.

有这样一个例子，这种情况，我们上节课就见过几个，它们是非弹性碰撞，当失去动能时，它是非弹性碰撞。

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Until the 2009 collision, the last known impact event on Jupiter was the famous "death" of Comet Shoemaker-Levy 9 in 1994.

2009年的碰撞之前，上一次已知的碰撞木星事件是著名的1994年苏梅克·列维9号彗星的死亡碰撞。

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The last significant train collision involving Metro-North occurred in 1988 when a train engineer was killed in Mount Vernon, N.

WSJ: Probe into Conn. train crash giving way to cleanup

Biker David Bartholomew, 54, died last March after a collision with a car in Ferndown driven by Collette Carpenter.

BBC: PCC calls for mobile phone law change

The last major space debris collision was in 2009 between Iridium 33, an operational U.S. communications satellite, and Cosmos 2251, a decommissioned Russian satellite, Kelso said.

CNN: STORY HIGHLIGHTS