User:B.V.Hemanth kumar/sandbox

MOMENTUM Momentum is the product of mass and velocity.it can be described as the following of the newtons first law of motion. In this case the foot ball of bigger mass will move with less velocity compared to the foot ball of 2 kg.
 * when an object is thrown with a foce it moves with some speed.when more force is applied then then the object moves with more speed
 * Take a ball of mass 5kg and throw the ball with some force. it moves with some velocity.
 * Now take abig rock of 10kg and apply the same force as you applied in the above case then the velocity of rock differs from the velocity of the ball in the above case.
 * If you kick a foot ball of mass 2 kg then it moves with some velocity.now can you tell the velocity of 5 kg foot ball if it is kicked with a same force?
 * Suppose assume that a bicycle hits you .what would be the damage occured to you?the damage occured to you will be small because you ight have just fell down.
 * Now assume that a big truck has hit you .ooops you will be no more.Why do you think this has happend ?The damage could be equal in both cases but it is not as supposed. Because in the first case you are hit by a smaller mass but in the next case tou are hit by a bigger mass so that the damage could not be recovered.

You can make generalisation from all these observations from the above example.There is a quantiyy that relates both mass and velocity. From the last examples you can make out that the amount of hurt will be more if the masswill be more. when do you think you are hurt more. In the first case or the second case? in the second case absolutely u are more hurt and you are hospitalised. From all these observations from the above examples we can make out that there is quantity that relates both mass and velocity. that quantity is nothing but the momentum.The first law of motion indicates that when an unbalancd external force acts on an object its velocity changes.that is the object gets an acceleration.we would now like to study how the acceleration of an object depends on the force applied to it and hoe we measure the forcethe impact produced by the object depends on the object depends on their mass and velocity. similarly if an object is to be accelerated we know that greater force is required to attain a greater velocity.one such property is called momentum. It was introduced by newton.the momentum is defined as the product of mass and velocity it is a vector quantity.
 * Let us assume that you are hit by a statonary scooter. And in the other case you are hit by a scooter moving with a velocity of 100kmph.