Exercice2 Un automobiliste actionne son régulateur de vitesse avant d'entrer sur une portion d'autoroute
rectiligne de longueur 3 km. Il met 72 secondes pour parcourir cette distance.
1-Quelle est la vitesse de la voiture en m/s ?
2-Sur cette autoroute, la vitesse autorisée est limitée à 130 km/h. L'automobiliste est-il en
infraction ?

i think the answer would be reserve.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.