A 25.0 Kg box is being pushed by a man horizontally. If the man applies a force of 200.0 N to keep the box moving at a constant velocity, what is the force of friction on the box? (b)
What is the μ\muμ k on the box? (Show your work)

(c)
What was the net force on the box

explanation:

the masses of the objects and the distance between them

the answer for apex is the lowest

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

k2s for potassium sulphide