Question

A car slowing down for a stop sign is an example of?

Answer 1

B. negative acceleration

Answer 2

the correct choice is

b. negative acceleration

acceleration is given as rate of change of velocity and is given by the formula

a = (v - v₀)/t

where a = acceleration , v = final velocity, v₀ = initial velocity , t = time

as the car slows down , the final velocity is smaller than the initial velocity.

v < v₀

so (v - v₀) < 0

so acceleration = a =  (v - v₀)/t

since (v - v₀) < 0

hence a < 0

so the acceleration is negative