Impact Parameter

(A) The trajectory traced by an incident particle depends on the impact parameter of collision (R) The impact parameter is the perpendicular distance of the initial velocity vector of the incident particle from the centre of the target nucleus

(A) the trajetory traced by an incident particle depends on the impact parameter of collision. (R) the impact parameter is the perpendicular distance of the initial velocity vector of the incident particle from the centre of the target nucleus.

A particle of mass m moving with speed u collides elastically with a sphere of radius R and same mass at rest, at an impact parameter d. Find (a) Angle between their final velocities and (b) Magnitude of their final velocities.