Abox of mass 115 kg sits on an inclined surface with an angle of 59º. what
is the component of the weight of the box along the surface?

966 N

Explanation:

The component of the weight along the direction perpendicular to the plane is:

where

m is the mass of the box, g the acceleration of gravity, the angle of the inclined plane.

Similarly, the component of the weight of the box along the surface is

acting down along the incline.

Here we have:

m = 115 kg

g = 9.8 m/s^2

Substitting in the last equation, we find the component of the weight of the box along the surface:

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.