Question

Assertion (A): The faster the velocity at which a ball is thrown up, the faster the velocity with which it hits the ground. Reason (R): The initial momentum of a system is always equal to its final momentum.

Answer 1

Answer:

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In physics, the term conservation refers to something which doesn't change. This means that the variable in an equation which represents a conserved quantity is constant over time. It has the same value both before and after an event.

There are many conserved quantities in physics. They are often remarkably useful for making predictions in what would otherwise be very complicated situations. In mechanics, there are three fundamental quantities which are conserved. These are momentum, energy, and angular momentum. Conservation of momentum is mostly used for describing collisions between objects.

Answer 2

Answer:

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