If u and v are initial and final velocities of a body having an indirect impact on a fixed plane and α and β are angles with line of impact made by initial and final velocities and if e is coefficient of restitution, then newton’s law of collision which holds good for this impact is
1
v cos β = eu cos α
2
u cos β = ev cos α
3
v sin β = eu sin α
4
u sin β = eu sin α