KINEMATICS
Motion – a change in position of a particle with respect to time and
its reference point.
Position – the location of the particle with respect to a chosen
reference point considered to be the origin of a coordinate system.
Displacement – the change in position of a particle in some time
interval (SI unit: m)
Distance – the length of a path followed by a particle
Average Velocity – the particle’s displacement divided by the
time interval during which that displacement occurs
(SI unit: m/s)
Average Speed – the total distance traveled of a particle divided
by the total time interval required to travel that distance
Average Acceleration – the change in velocity of the particle
divided by the time interval during which the change occurs (SI
unit: m/s/s = m/s2)
, DYNAMICS
-the study of the relationship of motion to the physical concepts
such as mass and force that causes its motion.
Force is a push or a pull exerted on an object.
A force is an interaction between two objects or between an object
and its environment.
Contact force is a force that involves direct contact between two
bodies.
Normal Force is when an object rests or pushes on a surface, the
surface exerts a push on it that is directed perpendicular to the
surface.
Friction Force a force exerted by a surface directed parallel to
the surface and opposite to the direction of the motion.
Tension Force a force exerted on an object by a rope, cord, etc.
Long-range (or field) forces do not involve physical contact
between two objects but instead act through empty space.
Net force is the vector sum (or resultant) of all forces exerted on
the object
Component Method
Rx = Ax + Bx + Cx + Dx + . . .
Ry = Ay + By + Cy + Dy + . . .
Motion – a change in position of a particle with respect to time and
its reference point.
Position – the location of the particle with respect to a chosen
reference point considered to be the origin of a coordinate system.
Displacement – the change in position of a particle in some time
interval (SI unit: m)
Distance – the length of a path followed by a particle
Average Velocity – the particle’s displacement divided by the
time interval during which that displacement occurs
(SI unit: m/s)
Average Speed – the total distance traveled of a particle divided
by the total time interval required to travel that distance
Average Acceleration – the change in velocity of the particle
divided by the time interval during which the change occurs (SI
unit: m/s/s = m/s2)
, DYNAMICS
-the study of the relationship of motion to the physical concepts
such as mass and force that causes its motion.
Force is a push or a pull exerted on an object.
A force is an interaction between two objects or between an object
and its environment.
Contact force is a force that involves direct contact between two
bodies.
Normal Force is when an object rests or pushes on a surface, the
surface exerts a push on it that is directed perpendicular to the
surface.
Friction Force a force exerted by a surface directed parallel to
the surface and opposite to the direction of the motion.
Tension Force a force exerted on an object by a rope, cord, etc.
Long-range (or field) forces do not involve physical contact
between two objects but instead act through empty space.
Net force is the vector sum (or resultant) of all forces exerted on
the object
Component Method
Rx = Ax + Bx + Cx + Dx + . . .
Ry = Ay + By + Cy + Dy + . . .
