a star of mass 2 x10^30 kg is located at <7 x 10^12, 3 x 10^12, 0)>m. A planet of mass 5 x 10 ^24 is located at <3x10^12, 8x10^12,0>m and is moving at a velocity of <1.3x 10^4, 1.2 x 10^4, 0>m/s. During a time interval of 1 x 10^6 seconds, what is the change in the planet's velocity?