Question

What is the acceleration of a vehicle that

changes its velocity from 300 km/h to a dead

stop in 20 s ?

Answer 1

Step-by-step explanation:

Given:

ΔV = 300 km/h = 300 000 m / 3 600 s ≈ 83.3 m/s

Δt = 20 s

_____________

a - ?

The acceleration:

a = ΔV / Δt = 83.3 / 20 ≈ 4.2 m/s