Two bodies A and B are moving towards a plane mirror with speeds vₐ and vᵦ respectively as shown in the figure. The speed of the image of A with respect to body B is :-

Question

G1 Physics · Accepted Answer

From plane-mirror symmetry and the directions shown, the image of A approaches B with relative speed equal to the sum of the two given speeds. Therefore the required speed is vₐ + vᵦ.