+ve a→
(v→) ↑ Rate
SI
with time a→ = of
unit Acceleration Branch of physics that studies
v→ - chang Mechanics
-ve a→ => (a→) objects at rest or in motion
u→/ t e of
(retardation) m/ s²
V→
(v→) ↓ with Statics Deals with objects at rest
time
Types of Study of motion of objects
V→=s→/t; SI Disp. covered by body Velocity Kinematics
Mechanics without considering cause
unit= m/s per unit time (V→)
Study of motion of objects
Dynamics
V=s/t; SI Distance covered by Speed with considering cause
unit= m/s body per unit time (V) Body said to be in motion if
# SI unit => meter Motion changes position concerning
# Vector quantity time or surrounding
# Can be +,- or 0
Characteristics Motion in a
of Body said to be at rest if it
# Displacement <= Distance
displacement
straight line Rest doesn't change position
# Not dependent on choice concerning time or surrounding
of origin of coordinate axes
bcz body in rest with respect
Shortest path btw initial & final positions Displacement Rest & Motion-
to one is in motion for
Relative Terms
another eg. person in train
Distance/
Actual path covered by a body Body covering distance
Path length
Point Object longer than its size is
flying Body in motion in 3D if 3 Motion considered Point Object
aeroplane coordinates change with time in 3D Follows
Arbitrary
Newton's
orbit of Body in motion in 2D if 2 Motion set of Inertial
1st Law
planets coordinates change with time in 2D axes for
Frame of of motion
describing
freely Body in motion in 1D if 1 Motion Reference
position Doesn't follow
falling body coordinate changes with time in 1D Non
or motion Newton's 1st
Inertial
of a body Law of motion
(v→) ↑ Rate
SI
with time a→ = of
unit Acceleration Branch of physics that studies
v→ - chang Mechanics
-ve a→ => (a→) objects at rest or in motion
u→/ t e of
(retardation) m/ s²
V→
(v→) ↓ with Statics Deals with objects at rest
time
Types of Study of motion of objects
V→=s→/t; SI Disp. covered by body Velocity Kinematics
Mechanics without considering cause
unit= m/s per unit time (V→)
Study of motion of objects
Dynamics
V=s/t; SI Distance covered by Speed with considering cause
unit= m/s body per unit time (V) Body said to be in motion if
# SI unit => meter Motion changes position concerning
# Vector quantity time or surrounding
# Can be +,- or 0
Characteristics Motion in a
of Body said to be at rest if it
# Displacement <= Distance
displacement
straight line Rest doesn't change position
# Not dependent on choice concerning time or surrounding
of origin of coordinate axes
bcz body in rest with respect
Shortest path btw initial & final positions Displacement Rest & Motion-
to one is in motion for
Relative Terms
another eg. person in train
Distance/
Actual path covered by a body Body covering distance
Path length
Point Object longer than its size is
flying Body in motion in 3D if 3 Motion considered Point Object
aeroplane coordinates change with time in 3D Follows
Arbitrary
Newton's
orbit of Body in motion in 2D if 2 Motion set of Inertial
1st Law
planets coordinates change with time in 2D axes for
Frame of of motion
describing
freely Body in motion in 1D if 1 Motion Reference
position Doesn't follow
falling body coordinate changes with time in 1D Non
or motion Newton's 1st
Inertial
of a body Law of motion
