Question

A man stands still on a moving walkway that is going at a speed of 0.3 m/s to the south. What is the velocity of the man according to a stationary observer?

Answer 1

Answer:

With respect to stationary observer the velocity of man is 0.3 m/s towards South

Explanation:

As we know that here man is standing still on the moving walkway

so here we can say that velocity of man with respect to walkway is zero

$\vec v_{mw} = 0$

now as per relative velocity concept we know

$\vec v_{mw} = \vec v_m - \vec v_w$

here we know

$\vec v_m$ = velocity of man with respect to stationary observer

$\vec v_w$ = velocity of walkway

now from above equation we have

$\vec v_m = \vec v_{mw} + \vec v_w$

now plug in all values in it

$\vec v_m = 0 + 0.3 m/s = 0.3 m/s$ towards South

Answer 2

The velocity is 0.3 m/s South.