Respuesta :

evgeniylevi

Answer:

1.574 [m/s²].

Explanation:

1) acceleration is: a=(V-V₀)/t, where V - final velocity [68km/h=18.(8)m/s]; V₀ - initial velocity [0]; t - elapsed time [12sec.];

2) according to the formula above:

a=18.(8)/12≈1.574 [m/s²].