2 points A car is travelling down the road at 27.0 m/s on a cold winter morning (where the speed of sound is around 333 m/s) when it passes a stationary train whistle with a frequency
of 760 Hz. What is the frequency of the whistle heard by the driver of the car as the car drives away?
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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.