Question

With an applied force of 225 N, the car will accelerate and move from rest travelling 25 m in 19.5 s. what is the mass of the car

Answer 1

The acceleration is

$$a=\frac{2h}{t^2}=\frac{2(25)}{19.5^2}=0.1315\frac{m}{s^2}$$

The mass of the car:

$$m=\frac{F}{a}=\frac{225}{0.1315}=1710\ kg$$