A rajmohan dora Asked a Question
May 14, 2020 1:51 pmpts 30 pts
Two objects of masses m, = 200 gm and m, = 500 gm possess velocities v, = 10î m/sec V, = 3i-5j m/sec. Just prior to a collision during which they become permanently attachad each other, then (A) (B) (C) (D) mlsec. an ached 23. The velocity of center of mass is 5i+25j The initial momentum in the center of mass frame is 35i +25j kg.m/sec. The final momentum in the center of mass frame is zero. Final K.E. of the system after collision is 8.75 Joule.
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  • Ruby negi
    here is solution for option a , d.. in the previous attached page , solution is for option b and c...
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  • Ruby negi thankyou
    dear, the option b, c is asking for initial and final momentum in center of mass frame so you have to first find the velocity in center of mass frame.. here is the solution... acco...
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  • A rajmohan dora
    4th option is incorrect k.e = 13.21 J
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    Ruby negi
    yeah you are right.. option d is incorrect.. your approach to find k.e is right... see the attached pages, all things will definitely clear to you... best regards.
  • Dhairya sharma Best Answer
    hope u will get it.
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  • Dhairya sharma
    yes dear u are ri8 option 3 is correct see the attached. that velocity of composite system in cm frame is zero.
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  • Dhairya sharma thankyou
    all first three options are not correct . the only possibility is 4 to be correct. I will attach the for 4th option file
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