A car is moving at a rate of 72 km/hr. How far does the car moves when it stops after 4 seconds?​

0.8 km/hr

Explanation:

Transpose the formula of speed to make distance the subject

Distance = speed × time

Also because the speed is in km/hr and the time is in seconds we need to convert the 4 seconds to hour

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.