two sticky balls each one weighs 1kg moving at g=-9.8k m/sec^2 at t=0 ball A: ra(0)=7x+4.9z va(0)=7x+3y ball B: rb(0)=49x+4.9z vb(0)=-7x+3y find ra(t) va(t) rb(t) vb(t) ?? i know collisions from high school and here it looks very different i know v(t)=v0 +a*t x(t)=x0+v0*t +(a*t^2)/2 how to see things in similar terms? how to solve it??