Question

Way?

27. What is the average acceleration of the Blue Flame speed car if its initial velocity is 1000 km/h and it
comes to a complete stop in a distance of 2.0 km?

Answer 1

Step-by-step explanation:

Given:

V₀ = 1 000 km/h = 1 000 000 m / 3 600 s ≈ 280 m/s

V = 0 m/s - the Blue Flame car stopped

D = 2.0 km = 2 000 m - distance

________________________________

a - ?

D = (V₀² - V²) / (2·a)

Acceleration:

a = (V₀² - V²) / (2·D)

a = (280² - 0²) / (2·2000) ≈ 20 m/s²