Question

A man runs towards a mirror at a speed 15 m/s The speed of the image relative to the man is

• A. 15 $ms^{- 1}$
• B. 30$ms^{- 1}$
• C. 35 $ms^{- 1}$
• D. 20$ms^{- 1}$

Answer 1

Answer: (B)

30$ms^{- 1}$

Answer 2

Relative velocity of image $w.r.t.$ man

$= 15 - ( - 15) = 30\mspace{6mu} m/s$