Question

What is Momentum? What are its units in S.I. system​

Answer 1

Answer:

SI Units of momentum=Kg.m/s

Explanation:

Momentum is the property of a body

for eg, you throw a plastic ball with some velocity v

and throw a rubber ball with the same velocity

the rubber ball will create an big impact

i.e. Momentum is directly proportional to mass

and now if you throw a ball with velocity v

and with 2v it will create an big impact therefore

momentum is also proportional to velocity

so  by above 2 statements

momentum (P) is α m.v

therefore

P=mv

Answer 2

Answer:

Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton’s second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton’s laws of motion.From Newton’s second law it follows that, if a constant force acts on a particle for a given time, the product of force and the time interval (the impulse) is equal to the change in the momentum. Conversely, the momentum of a particle is a measure of the time required for a constant force to bring it to rest.According to Newton’s third law, the particles exert equal and opposite forces on one another, so any change in the momentum of one particle is exactly balanced by an equal and opposite change of the momentum of another particle. Thus, in the absence of a net external force acting on a collection of particles, their total momentum never changes; this is the meaning of the law of conservation of momentum. See also conservation law; angular momentum.