A 15.0 kg stone slides down a snow-covered hill, leaving point A with a speed of 10.0 m/s. There is no friction on the hill between points A and B(ground), but there is friction on the level ground at the bottom of the hill , between B and the wall. After entering the rough horizontal region, the stone travels 100 m and the run into a very long, light spring with force constant 2.00 N/m. The coefficient of kinetic and static friction between the stone and the hoizontal ground are .20 and .80, respectively. a) What is the speed of the stone when it reaches point B ?
b) How far will the stone compress the spring?
c) Will the stone move again after it has been stopped by the spring?
d) Classify each force acting on the stone as conservative or non conservative. Explain

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

d) physical means can be used to separate the components of air.

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.