Question

A car can go from rest to 90 km⁄h in 10 s. What is its acceleration?

Answer 1

2.5 m/s²

Explanation:

First, convert to SI units.

90 km/h × (1000 m/km) × (1 h / 3600 s) = 25 m/s

a = Δv / Δt

a = (25 m/s − 0 m/s) / 10 s

a = 2.5 m/s²

Answer 2

2.5 m/s^2

Explanation: