An unstable atomic nucleus of mass 17 x10-27 kg initially at rest disintegrates into threeparticles. ONe of the particles, of mass 5 x 10-27 kg,moves along the y axis with a speed of 6 x 106 m/s.Another particle, of mass 8.4 x 10-27 kg, moves alongthe x axis with speed of 4 x 106 m/s. Find
{a} the velocity of the third particle and
{b} the total kinetic energyincrease in this process.