A 100 lb crate is initially stationary and is placed along an inclined plane making an angle of 30 degrees with the horizontal. The coefficients of friction between the crate and the surface are ??=0.2 and ??=0.16.    a. If the horizontal force of 90 lb is applied at the crate, determine how far the crate moves from its initial position in 2 sec.  b. Determine the acceleration of the block  c. If the horizontal force applied to the crate is only 30 lb., how far will the crate moves from its initial position in 2 secs.

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Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.