Question

A bee flies at a constant rate of 5
m
s
until it notices a flower. It then comes to rest in 5 seconds. Find the acceleration of the bee if
a=
Δv
Δt
.
A) -5
m
s2
B) -1
m
s2
C) 1
m
s2
D) 5

Answer 1

∆v = -5 m/s
∆t = 5 s

a = ∆v/∆t = (-5 m/s)/(5 s) = -1 m/s^2 .

I know that's the right answer.
I THINK that's what choice-B is trying to say.