A person jogs toward a plane mirror at a speed of 3 m/s. How fast is he approaching his image in the mirror?
A) 5 m/s
B) 1 5 m/s
C) 6 m/s
D) 4 m/s
E) 3 m/s

Question

Quizplus · Accepted Answer

When a person moves towards a plane mirror, the image in the mirror moves towards the person at the same speed. Therefore, the relative speed at which they approach each other is double the person's speed, making it 6 m/s.

A Person Jogs Toward a Plane Mirror at a Speed