In an elastic collision between two bodies of mass m₁ and m₂,with m₂ initially at rest,mass 1 moves off at angle $\theta$relative to the direction of its initial velocity and mass 2 at angle $\phi$.An exam paper shows the equations below: m₁v₁_i 0 = m₁v₁_f cos$\theta$ + m₂v₂_f sin$\phi$ = m₁v₁_f sin$\theta$ + m₂v₂_f cos$\phi$ What error(s)has the student made? A)In the first equation,m₂v₂_f sin$\phi$ should be m₂v₂_f cos$\phi$. B)In the second equation,m₂v₂_f cos$\phi$ should be m₂v₂_f sin$\phi$. C)In the second equation,the plus sign between the terms on the right should be a minus sign. D)All of the errors listed above. E)Only errors (a)and (b)above.

Question

Quizplus · Accepted Answer

Both errors (a) and (b) are present in the equations, and in addition, the sign between the two terms in the second equation should be minus because the momentum is conserved in the collision.

In an Elastic Collision Between Two Bodies of Mass M1 θ\thetaθ

In an Elastic Collision Between Two Bodies of Mass M₁ $\theta$