a car P of mass 1000kg moves with a speed 20ms^-1 and makes a head on collision with car Q of mass 1500kg , which was moving with a speed of 10ms^-1 in the opposite direction before the collision . if the two cars syick together after the collision , find their common velocity immediately after the collision.
點計???plz explain in english
力學問題(緊急)
2007-01-19 8:41 am
回答 (1)
2007-01-19 8:56 am
✔ 最佳答案
Initial momentum=Final Momentumm(p)v(p)+m(q)v(q)=MV
1000 x 20 + 1500 X (-10) = 2500 V
V=2 ms^-
Two cars sticking together moves in 2ms^-1 in the direction of car P.
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070119000051KK00150