Question

A car slows down at -5.00 m/s2 until coming to a complete stop. if it travels 15.0 m before stopping, what was it's initial velocity?

Answer in m

Answer 1

12.2 m/s

Step-by-step explanation:

Given:

s = 15.0 m

v = 0 m/s

a = -5.00 m/s²

Find: u

v² = u² + 2as

(0 m/s)² = u² + 2 (-5.00 m/s²) (15.0 m)

u = 12.2 m/s