Question

(a) (i) If A = -î + 3ĵ + 2 ˆk and B = 3î +2 ĵ + 2 ˆk then find the value of A B


.

(ii) Using the second law of motion show that impulse is equal to the

change in momentum.​

Answer 1

(1) A.B = -3+6+4=10-3=7

(2) F=mv-mu/t

F × t=mv -mu

impulse = change in momentum

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