Question

A truck running at 115 km / h slows down at a rate of 4 m / s every 2 seconds. How far will it travel to a stop? choose the correct option 1) 335.04m 2) 205.04m 3) 255.04m

Answer 1

3) 255.04 m

Step-by-step explanation:

Given:

v₀ = 115 km/h = 31.944 m/s

v = 0 m/s

a = -(4 m/s) / 2s = -2 m/s²

Find: Δx

v² = v₀² + 2aΔx

(0 m/s)² = (31.944 m/s)² + 2 (-2 m/s²) Δx

Δx = 255.11 m

Closest answer is option 3.