Which of the following questions best highlights a shortcoming of the big bang theory? a. how can all galaxies move away from each other? b. what makes people think that the universe started from a single point? c. how is the amount of helium in the universe evidence of the big bang? d. what was present before the beginning of our universe?

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

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.