Question

A sports car starts with a speed of 29.0 km/hr and accelerates at a rate of 3.91 m/s^2 for 20.0 seconds. What is the final speed of the sports car in km/hr? (

Answer 1

311 km/hr

Step-by-step explanation:

Given:

v₀ = 29.0 km/hr ≈ 8.06 m/s

a = 3.91 m/s²

t = 20.0 s

Find: v

v = v₀ + at

v = (8.06 m/s) + (3.91 m/s²) (20.0 s)

v = 86.3 m/s

v ≈ 311 km/hr