Physics problem...help?

Question

A car enters the freeway with a speed of 5.6

m/s and accelerates uniformly for 3.1 km in

3.1 min.

How fast is the car moving after this time?

Answer in units of m/s.

Answer 1

1) find A for Df=Di + Vi T + (1/2)AT^2

3100m = 0 + 5.6m/s + (1/2)A(186s)^2

A= .11899m/s^2

2) find Vf  for Vf=Vi + AT

         Vf = 5.6 m/s + .11899(186s)

         Vf = 27.733 m/s

         Vf = 28 m/s to 2 significant digits

I am assuming you have those formulas at your disposal.

Hope that helps