Sphere A of mass is moving with momentum towards an identical sphere B that is…
PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
Sphere A of mass m is moving with momentum p towards an identical sphere B that is initially at rest on a smooth horizontal surface. The collision between the spheres is perfectly elastic. A student represents the momenta just after collision by drawing two arrows of equal length pointing in the original direction of motion of A. Identify the conceptual error in this representation.