A bus completes a trip from City A to City B with an overall average speed of 19 m/s. However, the bus made a rest stop for 15 minutes during the trip which brought the average speed down. Only considering the time that the bus was moving, the average speed of the trip was 22.5 m/s. How far apart are City A and City B?

its a 5.5 n

glad that

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.