Dynamics: Newton's 2nd Law

Question

A 9558 N net force is accelerating a car at a rate of 4.9 m/s^2. What is the car’s mass? 

Answer 1

F = ma

m = F/a

m = 9558/4.9

m = 1950.6 kg

However, there are only 2 sig figs in the acceleration so we need to round our answer to 2 sig figs:

m = 2.0 x 10³ kg