A traffic engineer is checking to make sure the light at an intersection is safe for drivers. The speed limit on the road is 30m/s and the width of the intersection is 8m. For an average person reaction time of 1 s and an acceleration of -5m/s^2 he sets the yellow light time at 3 s. Compare the GO zone and the STOP zone and decide if the intersection is safe for drivers

this means that the temperature of both substances will be equal

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.