A 2.50kg sphere moving with a velocity (4.00i-2.00j+3.50k)m/s strikes another sphere of mass 3.50kg moving with a velocity (-1.75i+4.50j-2.50k)m/s ıf the velocity of the 2.50kg sphere after the collision is(1.00i-2.00j+ak)m/s find the value a and the velocity of 3.50kg sphere after an elastic collision?

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