Satisfaction in economic terms is the benefit that an individual gains from consuming a given amount of goods or services.
Maximizing satisfaction means receiving the most benefits with relatively few costs.
There is also additional bit of satisfaction, or amount of utility, gained from each extra unit of consumption. This is called a marginal utility.
Pyrexia mean rise in body temperature. Using your context clue from the word pyro you can guess that Pyr mean fire or heat related.
For every action there is an opposite and equal reaction
Every object not in motion stays that way unless acted upon. Any object in motion will stay at the same speed unless acted upon
The force acting on an object is equal to the mass of that object times its acceleration
