Light reflects off of surfaces. It is also absorbed by opaque materials and transmitted through transparent objects. Consider this diagram of two sheets of construction paper. Elaborate on the behavior of the incident light waves.
A) White paper reflects the incoming waves, while black absorbs the incoming waves.
B) White paper reflects some of the incoming waves, while black absorbs all of the incoming waves.
C) The white paper absorbs and transmits light waves, while the black paper absorbs all light waves.
D) Some of the light waves incident on the white paper are reflected and some are absorbed. None of the light waves are reflected from the black paper.

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.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min