CH2 Flashcards
Definition of distance
Length of route covered by an object
Definition of displacement
Shortest distance between initial and final position in a specific direction
Definition of speed
Rate of change of distance
Definition of Velocity
Rate of change of displacement
Definition of Acceleration
Rate of change of Velocity
4 Linear Motion Equations
v=u+at
s=(v+u)t/2
s=ut+at^2/2
v^2=u^2+2as
Gradient of displacement-time graph represent
Velocity
Gradient of velocity-time graph represent
Acceleration
Area under graph of velocity-time graph represent
Displacement
Definition of Free Fall Motion
Object fall down due to Gravitational force only
Definition of inertia
The tendency of an object to remain at rest, of if moving to continue its motion in a straight line at uniform velocity
Newton’s First Law Of Motion
An Object will remain at rest or move at uniform velocity unless acted upon by an external force
Factor affecting inertia & its relationship
Mass, The larger the mass, the larger the inertia
Definition of momentum
Product of mass and velocity
Principle of Conservation Of Momentum
The total momentum before collision is equal to the total momentum after collision if no external force is action on
Type of collision where both object move together after collision
Inelastic Collision
Type of collision where both object move seperately after collision
Elastic Collision
Type of collision where both object are initially at rest and moves in opposite direction
Explosion
Newton’s second law of motion
Rate of change in momentum is directly proportional to the force applied and act in the direction of the applied force
Definition of force
Push or Pull
3 Physical properties forces change
Speed, direction, shape
Definition of impulse
change in momentum
Definition of Impulsive force
Rate of change in momentum in a short period of time in a collision or impact
Newton’s Third Law Of Motion
For every action, there is a reaction of an equal magnitude in the opposite direction
Impact of follow though action
Increase time of impact
Increase change of momentum
Increas impulse
Definition of Weight
Gravitational force acting on an object
Definition of Gravitational field strength
Gravitational force acting on 1kg of mass
