- Introduction
- Rest time! Have fun
- Physics
- Chemistry
- BIOLOGY
- Reaching the age of Adolescence
- CROP PRODUCTION AND MANAGMENT
- Cells : The basic structural unit of life
- Nutrition in human beigns
- RESPIRATION IN HUMAN BEIGNS
- TRANSPORTATION IN HUMAN BEIGNS
- excretory system in human beigns
- NERVOUS SYSTEM
- PHOTOSYNTHESIS
- Respiration in plants
- REPRODUCTION IN PLANTS
- MOVEMENTS IN PLANTS
- Forest our lifeline
- WASTE WATER STORY
- WEATHER,CLIMATE AND ITS ADAPTATION .
- Reaching the age of Adolescence
- Model tests
- Animation time
TIME AND MOTION
TIME - THE GAP BETWEEN TWO EVENTS IS CALLED TIME .
MOTION- IF THE POSITION OF THE BODY CHANGES WITH RESPECT TO TIME IS CALLED AS MOTION.
REST - IF THE POSITION OF BODY DOESNT MOVE WITH RESPECT TO TIME IS SAID TO BE THAT BODY IS AT REST STATE.
REST AND MOTION ARE RELATIVE TERMS
DENSITY = MASS\VOLUME
D = M\V
SCALAR QUANTITY
THESE HAVE ONLY MAGNETUDE .
VECTOR QUANTITY
THESE HAVE MAGNETUDE AND DIRECTION BOTH .
DISTANCE -
IT IS THE LENGTH OF ACTUALL PART TAKEN .
IT DEPENDS ON PART OF JOURNEY .
ITS SCALAR QUANTITY .
DISPLACEMENT-
IT IS LENGTH OF SHORTEST PART TAKEN .
IT DOESNT DEPENDS ON PART OF JOURNEY.
ITS A VECTOR QUANTITY .
SPEED -
SPEED = DISTANCE / TIME TAKEN
AVERAGE SPEED -
AVG. SPEED = TOTAL DISTANCE / TOTAL TIME
FULL FORMS
v = FINAL VELOCITY
u = INITIAL VELOCITY
a = ACCELERATION
t = TIME
s = DISPLACEMENT
ACCELERATION (a)
RATE OF CHANGE OF VELOCITY WITH RESPECT TO TIME IS KNOWN AS ACCELERATION .
IT IS A VECTOR QUANTITY
ITS SI UNIT IS m/sec sq.
EQUATIONS ON MOTION
a = v - u/t
v-u = at
v = u +at
s = ut + 1/2 at square
v =s/t
a = v/t
SIMPLE PENDULUM
AMPLITUDE
IT IS THE MAXIMUM DISPLACEMENT FROM MEAN POSITION
TIME PERIOD
IT WILL NOT CHANGE WITH ITS LENGTH , MASS AND DENSITY
T = 2 PIE * SQ. ROOT OF L/G
MOTION- IF THE POSITION OF THE BODY CHANGES WITH RESPECT TO TIME IS CALLED AS MOTION.
REST - IF THE POSITION OF BODY DOESNT MOVE WITH RESPECT TO TIME IS SAID TO BE THAT BODY IS AT REST STATE.
REST AND MOTION ARE RELATIVE TERMS
DENSITY = MASS\VOLUME
D = M\V
SCALAR QUANTITY
THESE HAVE ONLY MAGNETUDE .
VECTOR QUANTITY
THESE HAVE MAGNETUDE AND DIRECTION BOTH .
DISTANCE -
IT IS THE LENGTH OF ACTUALL PART TAKEN .
IT DEPENDS ON PART OF JOURNEY .
ITS SCALAR QUANTITY .
DISPLACEMENT-
IT IS LENGTH OF SHORTEST PART TAKEN .
IT DOESNT DEPENDS ON PART OF JOURNEY.
ITS A VECTOR QUANTITY .
SPEED -
SPEED = DISTANCE / TIME TAKEN
AVERAGE SPEED -
AVG. SPEED = TOTAL DISTANCE / TOTAL TIME
FULL FORMS
v = FINAL VELOCITY
u = INITIAL VELOCITY
a = ACCELERATION
t = TIME
s = DISPLACEMENT
ACCELERATION (a)
RATE OF CHANGE OF VELOCITY WITH RESPECT TO TIME IS KNOWN AS ACCELERATION .
IT IS A VECTOR QUANTITY
ITS SI UNIT IS m/sec sq.
EQUATIONS ON MOTION
a = v - u/t
v-u = at
v = u +at
s = ut + 1/2 at square
v =s/t
a = v/t
SIMPLE PENDULUM
AMPLITUDE
IT IS THE MAXIMUM DISPLACEMENT FROM MEAN POSITION
TIME PERIOD
IT WILL NOT CHANGE WITH ITS LENGTH , MASS AND DENSITY
T = 2 PIE * SQ. ROOT OF L/G