Two particles having position vectors vecr_1 = (3hati + 5hatj)mand vecr_2 = (-5hati + 3hatj)mare moving with velocities vecV_1 = (4hati - 4hatj) ms^(-1)andvecV_2 = (a veci - 3vecj) ms^(-1) . If they collide after 2 seconds, the value of 'a' is

Two particles having position vectors vecr_1 = (3hati + 5hatj)mand vec

1.	Two particles having position vectors vecr_1 = (3hati + 5hatj)mand vecr_2 = (-5hati + 3hatj)mare moving with velocities vecV_1 = (4hati - 4hatj) ms^(-1)andvecV_2 = (a veci - 3vecj) ms^(-1) . If they collide after 2 seconds, the value of 'a' is
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