Explanation:
Given that, Tom briskly walks 136 meter East, then turns and walks 100 meters West.
Let East is positive and west is negative.
d₁ = 136 m
d₂ = -100 m
Time, t = 3 minutes = 180 seconds
Average velocity,
[tex]v=\dfrac{(-100-136)\ m}{180\ s}\\\\v=-1.32\ m/s[/tex]
So, Tom's average velocity is 1.32 m/s and it is due west.
