An example of demographic momentum is when a population continues to grow even after fertility rates have declined to replacement levels. This is because there are proportionately more women in the reproductive age group, leading to a continued increase in population size.
One example of conserved momentum is a collision between two objects where the total momentum before the collision is equal to the total momentum after the collision. This is known as conservation of momentum.
An object at rest has zero momentum. For example, a stationary rock on the ground has zero momentum because both its mass and velocity are zero.
An object at rest. Actually that's the only possible example for a single object. For two objects, you can have objects moving in opposite directions; for example, one may have a momentum of +100 units, and the other, a momentum of -100 units.
An example of an event when momentum is not conserved is when two ice skaters on frictionless ice push off each other. When they push off, one gains momentum in the opposite direction, causing the total momentum of the system to change from the initial state. This violates the principle of conservation of momentum.
In an isolated system the total momentum of a system remains conserved. For example If you fire a bullet from Gun , bullet go forward with some linear momentum and in order to conserve the linear momentum the gun recoils
Demographic momentum is the idea that a population will continue growing long after replacement fertility has been reached. Replacement fertility means that women are averaging 2.1 children each. Demographic momentum happens because of a large fraction of it's population entering their reproductive years.
One example of conserved momentum is a collision between two objects where the total momentum before the collision is equal to the total momentum after the collision. This is known as conservation of momentum.
It is a matter of interest because after the demographic momentum changes it usually means that the country has entered a new demographic stage or transition. This plays a big effect on the countries new population and can exceed the previous population or decrease dramatically until reaching ZPG( Zero Population Growth)
Momentum is motion. When a car is moving it is exhibiting momentum. A young professional getting promotions is experiencing momentum.
An object at rest has zero momentum. For example, a stationary rock on the ground has zero momentum because both its mass and velocity are zero.
An object at rest. Actually that's the only possible example for a single object. For two objects, you can have objects moving in opposite directions; for example, one may have a momentum of +100 units, and the other, a momentum of -100 units.
Demographic explosion
In an isolated system the total momentum of a system remains conserved. For example If you fire a bullet from Gun , bullet go forward with some linear momentum and in order to conserve the linear momentum the gun recoils
An increase in the birth rate is NOT an example of a demographic change. Demographic changes typically refer to shifts in population characteristics such as age, gender, race, or geographic distribution. An increase in the birth rate would be considered a demographic trend, rather than a change.
Elastic collision.
An example of an event when momentum is not conserved is when two ice skaters on frictionless ice push off each other. When they push off, one gains momentum in the opposite direction, causing the total momentum of the system to change from the initial state. This violates the principle of conservation of momentum.
In an isolated system the total momentum of a system remains conserved. For example If you fire a bullet from Gun , bullet go forward with some linear momentum and in order to conserve the linear momentum the gun recoils