Two satellites A and B are revolving around the earth circular orbits of radius r_(1) and r_(2) respectively with r_(1) lt r_(2). Plane of motion of the two are same. At position 1, A is given an impulse in the direction of velocity by firing a rocket so that it follows an elliptical path to meet B at position 2 as shown. A?t position 2, A is given another impluse so that velocities of A and B at 2 become equal and the move together. For any elliptical path of the satellite of the time period of revolution is given by Kepler's planetary law as T^(2)alpha r^(3) where a is semi major axis of the ellipse which is (r_(1)+r_(2))/(2) in this case. Also angular mopmentum of any satellite revolving around the Earth will remain a constant about EArth's centre as force of gravity on the satellite which keeps it in elliptical path is along its position vector relative to the earth centre. When A is given its first impulse at the moment.