A stationary 25 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.30. A horizontal force of 300 N is applied to the object. Draw a free body diagram with the forces to scale.

Determine the force of friction

Determine the acceleration of the object. the object is not moving acceleration is at 0.

ice to water 1 water to vapour 2 latent heat

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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.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.