PHYSICS
PHYSICAL QUANTITIES
VELOCITY[V]
Displacement [d] is the shortest distance between the initial and final position of
a body.
Velocity of a moving body is the rate of change of displacement of the body in a
particular direction and its unit is ms-1. Velocity is a measure of how fast the
matter is moving or its rate of change of its position with time.it is given by the
relation:
V=d/t
V=velocity
D=displacement
t=time in seconds
magnitude of velocity is called speed which is a scalar quantity.
ACCELERATION [a]
Rate of change of velocity is called acceleration. its unit is ms-2. It is a measure of
how quickly or slowly velocity is changing. velocity is constant acceleration is zero.
a= [vf - v0]/t
vf = final velocity
v0 = initial velocity
t = time interval
