A car travelling at a constant speed of 70km/h passes a stationary police car. The police car immediately gives chase, accelerating uniformly to reach a speed of 85km/h in 10s and continues at this speed until it catches the other car.
(A) Find the time taken for the police car to catch up with the Car.
(B) Find the distance travelled by the police car when this Happens.

true is the correct answer

hope i

cancer risk hope this

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.