Question

the net force on a 12 kg cart is 3.2 N back ward . Ignoring friction , what is the acceleration of the car

Answer 1

The Newton's second law states

$$a=\frac{F}{m}.$$

Hence, the acceleration of the car

$$a=\frac{3.2\:\rm N}{12\:\rm kg}=0.27\: \rm m/s^2.$$