To solve this problem, apply the formulas:
s = Vo*t + (1/2)*a*t^2
Vf = Vo + at
The provided values include:
Vf = final velocity =?
Vo = initial velocity = 1.4 m/s
a = acceleration = 0.20 m/s^2
s = displacement = 100m
Now perform the following calculations:
<span>100 = 1.4t + (1/2)*0.2*t^2
</span>t = 25.388s
and
Vf = 1.4 + 0.2(25.388)
Vf = 6.5 m/s
Thus, the sought answer is 6.5 m/s
All of the responses provided are excellent.