Tutoring with Harpalsinh Padhiyar

Answer

THE POSSITIVE AND NEGATIVE SIGN ARE USED FOR TWO THINGS 1.SHOWING THE MOTION OF THE PARTICAL IS ACCELERATION MOTION OR RETARDATION MOTION 1.IF V=NAGATIVE THEN RETARDATION MOTION 2.IF V=POSSITIVE ACCELERATE MOTION AND 2.ALSO IT USED BCZ THE VELOCITY OF IS VECTOR QUANTITY SO THERE TAJEN AS CARTESIAN SAYSTEM 1.IN POSITIVE X AND POSITIVE Y ITS POSITIVE 2.IN NAGATIVE X AND Y ITS NEGATIVE