two particles a and b is r at rest at separation of 160 both the particles start moving at t is equal to zero particle a moves in a straight line perpendicular to initial position a b with constant acceleration of 3 metre per second square particle be moves in a such a way that it always aims to word a and moves with the speed increasing at constant rate of 5 metre per second square then the time elapsed when both particles meet is and distance covered by a before meeting is
