the magnitude of impulse developed by a mass of 0.2 kg which changes its velocity from 5 i cap - 3 J cap + 7 k cap metre per second to 2i cap +3j cap +k cap
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subtracting the two to get change in velocity =(2-5) i +(3-(-3))j +(1-7)k = -3 i +6j -6k
now magnitude of change in velocity =root (9 + 36 + 36 ) = root (81)=9
now magnitude of impulse =9×0.2 =1.8 newton
now magnitude of change in velocity =root (9 + 36 + 36 ) = root (81)=9
now magnitude of impulse =9×0.2 =1.8 newton
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