Question

Find the acceleration of a 1500.kg car, driven by 2200.N against 450.N of friction

Answer 1

Given:

$m=1500\:\rm kg$

$F=2200\:\rm N$

$F_f=450\:\rm N$

The Newton's second law says

$$a=\frac{F_{net}}{m}=\frac{F-F_f}{m}$$

$$a=\frac{2200-450}{1500}=1.17\:\rm m/s^2$$