Question

a car travelling at 20 km/h gains an acceleration of 2 m/s2 in 6 s.find its final velocity.

Answer 1

Final velocity is 84 m/s

Answer 2

Vo = 20 km/h = 20000 m/3600 s = 5,56 m/s
a = 2 m/s²
t = 6 s

Vt = Vo + at
Vt = 5,56 + 2 . 6
Vt = 5,56 + 12
Vt = 17,56 m/s