The planet earth consists of land formations, large masses of water, gases in the atmosphere, and living organisms.

from a scientific perspective, which makes the planet earth a system?

a.
the planet earth contains both matter and energy.

b.
the planet earth consists of many components that rely and interact with one another.

c.
there are many different components on the planet earth.

d.
the earth is made of materials that scientists want to study.

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.