What is the net force?

Question

A runner with a mass of 75 kg accelerates from 0 to 7 m/s in 4 s. Find the net force on the runner using the alternate form of Newton's second law.

Answer should be in N.

Answer 1

Of course, Newton's 2nd Law is F = ma (force is mass multiplied by acceleration). I'm guessing that the ALTERNATE form (based on the given material) is:

so F = 75(7 - 0)/4 = 75(7/4) = 131.25 N. It would be appropriate to round to the appropriate number of sig figs but I'll let you do that.

If that's not the "alternate form" you are supposed to use, you'll need to share that with us.