Two bodies of masses 2kg and 4kg moving with velocities 10m/s and 2m/s respectively towards each other. What is the velocity of their centre of mass?

Asked by AAKAASH PRAVINBABU | 10th Oct, 2015, 05:16: PM

Expert Answer:

begin mathsize 14px style The space velocity space of space centre space of space mass space of space the space system space is space given space as straight V subscript straight C equals fraction numerator straight m subscript 1 straight v subscript 1 plus straight m subscript 2 straight v subscript 2 over denominator straight m subscript 1 plus straight m subscript 2 end fraction equals fraction numerator 2 cross times 10 minus 4 cross times 2 over denominator 2 plus 4 end fraction space space left parenthesis Negative space because space both space are space moving space in space opposite space directions right parenthesis straight V subscript straight C equals fraction numerator 20 minus 8 over denominator 6 end fraction equals 12 over 6 equals 2 space straight m divided by straight s end style

Answered by Romal Bhansali | 11th Oct, 2015, 07:18: PM