Question

derive expression for collision in 2 dimension​

Answer 1

$\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W} \purple{E}\orange{R᭄}}}}⋆$

Two-dimensional collisions of point masses where mass 2 is initially at rest conserve momentum along the initial direction of mass 1 (the x-axis), stated by m1v1 = m1v′1 cos θ1 + m2v′2 cos θ2 and along the direction perpendicular to the initial direction (the y-axis) stated by 0 = m1v′1y + m2v′2y.