Answer;
0.16 m/s²
Explanation;
From one of the equation of linear motion;
vf2 - vi2 = 2ax
Where;
vf = final speed after traveling a distance x at constant acceleration; vf = 42 m/s
vi = initial speed = 0 (starts from rest)
a = constant acceleration while traveling a distance x
x = distance traveled at constant acceleration; x = 5.6 km = 5600 m
Therefore;
a = vf2/(2x)
= 422/(2*5600) m/s²
= 0.1575 m/s²
≅ 0.16 m/s²
