Initial position, u = 10 m
Final position, v = 5 m
Change in time, ∆t = 5 s
We know that, velocity = ∆x / ∆t
where, ∆x is the displacement and ∆t is the change in time.
∆x = v - u
∆x = 5 m - 10 m
∆x = -5 m
Velocity = ∆x / ∆t
Velocity = -5 m / 5 s
Velocity = -1 m/s
Therefore, B: -1 m/s is the correct answer. A negative velocity means the object is traveling in the other direction.
