There are many signs that a chemical reaction is taking place. Which of the following is not one of these signs? There are many signs that a chemical reaction is taking place. Which of the following is not one of these signs? One of the substances melts. (Phase change) The container becomes much colder. (Temperature change) Tiny bubble appear on the metal. (Formation of a gas) A new color appears. (Color change)

do you have a formula possibly

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.