William W. answered • 06/05/20

Math and science made easy - learn from a retired engineer

You are give an initial velocity, an acceleration and a time that acceleration is applied. You are looking for the final velocity. So the equation that works is:

v_{f} = v_{i} + at

v_{f} = 5 + 40(2.5) = 5 + 100 = 105 m/s