Two knights on horseback start from rest 88.0 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of .300 m/s^2, while Sir Alfred's has a magnitude of .200 m/s^2. Relative to sir Ggeorge's starting point, where do the knights collide?

Answer 1

x1 = 1/2 a1t^2
x2 = 1/2 a2t^2
but x2 = 88-x1
Substitute and solve.