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InterviewSolution
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State the law of converstation of momentum andd also devire the mathematically formula i.e show that intial momentum of body is equal to its final momentum plzz answer this i mark u |
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Answer» Explanation:the law of conservation of momentum STATES that for two or more bodies acting UPON each other, their momentum ALWAYS remains constant, therefore momentum can neither be created nor be destroyed.DERIVATION-Consider two colliding particles A and B whose masses are m1 and M2 with initial and final velocities as u1 and v1 of A and u2 and v2 of B. The time of contact between two particles is given as t. A = m1(v1 − u1) (change in momentum of particle A) B = m2(v2 − u2) (change in momentum of particle B) FBA = −FAB (from third law of motion)FBA = m2*a2 =m2(v2-u2)/tFAB = m1*A1= m1(v1-u1)/tFBA = -FABm2(v2 - u2) = -m1(v1 - u1)m2v2 - m2u2 = -m1v1 - m1u1m1v1 + m2v2 = m1u1 + m2u2 |
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