Question

A caravan of mass 800kg is towed by a car with an acceleration of 2m/s^2 .If the resistance to motion is 100N,what is the force exerted by the car ?

Answer 1

Answer: 1600 N

Explanation:

The force exerted by the car to move the 800 kg-caravan is:

$F=m.a$

Where $a=2 m/s^{2}$ is the acceleration

$F=(800 kg)(2 m/s^{2})$

$F=1600 N$ This is the force exerted by the car, which is greater than the resistance force $F_{r}=100 N$. That is why the caravan is moving.