Kinematics and Dimension

• Motions is the change in position of an object with respect to its surrounding in a given interval time
• Mechanics = deals with the study of kinematics and dynamics
• Kinematics = It describe motions, without the reference of forces
• Dynamics = The effect that forces have on motion/cause of changes in motion
• Distance (di) = total length of path taken by an object
• Velocity (v) = rate at which displacement occurs
• Speed (S) = rate at which an object moves or travels
• Displacement (d) = distance between two points along a straight line; the shortest distance
• Acceleration (a) = change in velocity over time
• Motion is defined as any change in position with respect to time.
• The most basic quantity that describe motions is distance
• Other quantity that describe motion in accurate is displacement
• The SI Unit of displacement is meter(m)
• Displacement is a vector quantity that has a magnitude that equals to the shortest distance between the two position
• Distance = measures the length between objects/point without regard for direction
• The SI Unit of distance is meter(m)
• Average Speed is a scalar quantity that describes how fast the object is moving
• The SI Unit of Average speed is meter per second (m/s).
• Velocity is a vector quantity that defined as the change in position divided by time interval
• Instantaneous Velocity describe how fast the object and direction of motion at each instant of time
• Instantaneous Speed is the number with unit that indicated by speedometer
• Acceleration describe how fast an object is changing its motion
• Acceleration due to gravity is denoted by g and is equal to approximately 9.8 m/s^2.
• The SI unit of velocity is meter per second (m/s)
• The SI Unit of acceleration is meter per second squared (m/s2).
• Instantaneous Acceleration is the change in velocity and its direction at each instant of time
• If the object DECELERATE, its acceleration and velocity have OPPOSITE DIRECTION
• Uniformly Accelerated Motion is simplest type of accelerated motion
• Free Fall/Free Falling Bodies when an object thrown upward it always falls back due to the effect of gravity
• The acceleration of free falling body is ACCELERATION DUE TO GRAVITY (g)
• In the concept of free-fall, when the there's no air resistance, the object always directed downwards
• Free-falling object is a motion which air resistance is neglected/doesn't have air resistance and the acceleration is nearly constant
• Drawing graphs/Diagrams = It is a technique that describe the motion
• Projectile motion is a curve motion which are two-dimensional described using one-dimensional space motion
• Projectile motion only experiences the acceleration due to gravity and neglect air resistance
• Trajectory is the path that an object follow through space
• Projectile motion has a constant acceleration which are equal to the gravitational acceleration which is g=-9.8m/s2
• Vector of x-component is the same magnitude and direction (constant velocity) but zero (0) acceleration
• Vector in y-component have a constant acceleration and its velocity changes at a constant rate
• Projectile is any object give an initial velocity that follows a path determined by the effects of a gravity and air resistance