Write one advantage of MKS system over CGS system.
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Ответ:
An advantage of MKS units is that the derived units (like joules) are based on MKS units, using MKS units naturally gives answers in the appropriate SI unit. ... If the same calculation is done using CGS units the answer is in ergs (1 erg = 10−7 joules). The exact list of units used in the MKS system changed over time
Ответ:
The kinetic energy of the system after the collossion is less than the kinetic energy of the system before the collision. This is because the heat generated from the collision which is a direct consequence of the friction between both vehicles and possibly the road too. This heat energy due to friction is not a conservative form of energy and cannot be regained in another form. So after the collision this energy is lost, thereby reducing the total kinetic energy the system had before the collision.
Explanation:
Collisions as these are inelastic collisions. For inelastic collisions, the total momentum is conserved before and after the collision. The kinetic energy on the other hand is not conserved. This is because in most cases some of the energy is lost due friction in the form of heat.
Elastic collisions on the other hand generally have the total momentum and kinetic energy conserved before and after collision.
Thank you for reading.