A bus travels 210 km south along a straight path with an average velocity of 85 km/h to
the south. The bus stops for 25 min, then it
travels 230 km south with an average velocity
of 73 km/h to the south.
How long does the total trip last?
Answer in units of h.

are you like autistic or something?

xd

i think its c if i'm wrong

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.