1. Calculate the total mass:

* Total mass = mass of first car + mass of second car

* Total mass = 1250 kg + 325 kg = 1575 kg

2. Apply Newton's Second Law:

* Net force (F) = mass (m) * acceleration (a)

* F = 1575 kg * 2.15 m/s²

* F = 3393.75 N

Therefore, the net force acting on the first car is 3393.75 Newtons.