gc textbook chapter 7 Linear Momentum (id: d9e62be4c)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 IB物理学

[填空题]
A 15.0-kg object moving idkq1 t* c8bod 5h2r5utn the +x direcm5 gxt( fk(.8,ai: gbol/suqag vi,),v0gcwvtion at 5.5m/s collides head-on with a 10.0-kg o at,wq)m( ,s5oc(gigvbfg ./lg:uv, k8 0xvaibject moving in the -x direction at 4m/s Find the final velocity of each mass if:
(a) the objects stick together;   m/s
(b) the collision is elastic; v'$_A$ =    m/s v'$_B$ =    m/s
(c) the 15.0-kg object is at rest after the collision;   m/s ----待选择----not reasonable reasonable 
(d) the 10.0-kg object is at rest after the collision;   m/s ----待选择----not reasonable reasonable 
(e) the 15.0-kg object has a velocity of 4m/s in the -x direction after the collision. .   m/s ----待选择----not reasonable reasonable 
Are the results in (c), (d), and (e) “reasonable”? Explain
( Let A represent the 15.0-kg object, and let B represent the 10.0-kg object.)

参考答案:
空格1: 1.7±2%  空格2: -2.1±2%  空格3: 7.4±2%  空格4: 4.3±2%  空格5: reasonable  空格6: 2.8±2%  空格7: not reasonable  空格8: 10.3±2%  空格9: not reasonable 


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