Question

1. A car’s speedometer reads 40 m/s after accelerating from a standing start, for 25s. What was the magnitude of its acceleration

Answer 1

Answer:

a = 1.6m/s^2

Explanation:

v1 = 0 (starts from rest)

v2 = 40m/s

t = 25s

a = ?

use equation a = v2-v1 / t

a = 40 - 0 / 25

a = 1.6m/s^2