MADE BY :-Vibhav bhardwaj

 INERTIA  NEWTON’S FIRST LAW OF MOTION  NEWTON’S SECOND LAW OF MOTION  NEWTON’S THIRD LAW OF MOTION

 It is a push or pull which either changes or tends to change the state of rest or of uniform motion of a body.

 In the absence of external force, the inability of a body to change its state by itself is called INERTIA.

 It states that every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled by some external force to change that state.

 The rate of change of momentum of a body is directly proportional to the applied force and change takes place in the direction of applied force.  F = ma

 According to Newton third law of motion, it states that to every action their is equal and opposite reaction.  F’ = - F”

 Those physical quantities which need magnitude as well as direction for there complete representation is called a vector quantity.

 Triangle law of vector addition  Parallelogram law of vector addition

 Let two vectors P and Q be represented both in magnitude and direction by sides AB and BC of triangle ABC taken in same order, Then,  Acco. To triangle law, the resultant R is given by the closing side AC taken in opposite order.  Here in triangle ADC  AC= AD + CD  R= (AB+BD) + CD  R = AB + BD + 2AB.BD + CD  R = P +BC +2.AB.BD  R= P + Q 2P.Q Cos0  R= P + Q + 2PQ Cos0 c D A B R B Q

 When a body is thrown in horizontal direction- x y