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The field of physical science concerns itself with discovering natural causes and codifying them in terms of the effects they have on the observable world. In astronomy, for example, [[Kepler]] introduced three [[laws of motion]] in the 1600s which still stand true today.  

The field of physical science concerns itself with discovering natural causes and codifying them in terms of the effects they have on the observable world. In astronomy, for example, [[Kepler]] introduced three [[laws of motion]] in the 1600s which still stand true today.  

[[Issac Newton]] introduced his own, better-known, laws of motion as well. Newton told us that the amount of force applied to an object is directly proportional to the effect on its momentum. For example, if you push a 2,200 pound car on a railroad track with 110 pounds of force, it will accelerate at the rate of 1/20 meter/second. After 30 seconds, it will reach approximately 5 feet/second.

[[Issac Newton]] introduced his own, better-known, laws of motion as well. Newton told us that the amount of force applied to an object is directly proportional to the effect on its momentum. For example, if you push a 2,200 pound car on a railroad track with 110 pounds of force, it will accelerate at the rate of 1/20 meter/second. After 30 seconds, it will reach approximately 5 feet/second.

 

Newton's laws were modified slightly to take into account [[Albert Einstein]]'s discoveries about extremely fast-moving particles. It turns out that when a particle approaches the [[speed of light]] (186,000 miles per second), its [[mass]] increases (see [[Lorentz transformation equations]]).

==See also==

==See also==