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336Kinematics is the branch of physics that studies motion of bodies without considering or analyzing forces and the causes of the motion Kinematics is often known as the geometry of motion and is often seen as a branch of mathematics and sometime as the branch of mechanics Using contretemps from geometry the velocity acceleration and speed of any section of the system that are unknown for us can be firmly determined by not changing it Kinetics is the study of how bodies fall within it In many situations kinematics is used in astrophysics Astrophysics is the branch of astronomy that deals with the stars and other celestial bodies In biomechanics kinematics and robotics is described the movement of systems that made of connected parts which is called multi-linked systems such as the human skeleton a machine that it's part are moving or the robotic arm Geometric transformations are also called rigid transformation a transformation that doesn't change its shape or its size which are used for describing in a mechanical system the movement of components making it to obtain something from a source of the equations of motion making it simpler or easier to understand
The location of a vector of a molecule is a vector drawn from the place where it begins of the reference frame to the molecule It shows both the distance of the location from the origin and its way from the from the beginning place The direction cosines any of the cosines of the three corners between a controlled line in an area of the location of the vector make available for use a quantitative measure of way It is important to see that the location of the vector of a particle isn t special The position vector of a given molecule is unlikely relative to unlikely frames of reference Velocity and speed The velocity of a molecule is a vector quantity that reports the way of the motion and the magnitude of the motion of molecule More mathematically the rate of transformation of the position vector of a point with respect to time is the velocity of the point Think the ratio of the contrast of two positions of a molecule splat by the time interval which is the average velocity over that time interval Velocity is the distance travelled in unit time in a stated direction Also the velocity is tangent to the trajectory of the molecule at every position the particle settles along its path See that in a non rotating frame of reference the derivatives of the coordinate ways aren t examined as their locations and magnitudes are constants