Question

Determine the accelerations that result when a 20 N net force is applied to a 5 kg object and then to an 8 kg object.

Answer 1

The Newton's second law says

$$a_1=\frac{F}{m_1}=\frac{8\:\rm N}{5\:\rm kg}=1.6\:\rm m/s^2$$

$$a_2=\frac{F}{m_2}=\frac{8\:\rm N}{8\:\rm kg}=1\:\rm m/s^2$$