Monday, 1 August 2011
Monday, 11 July 2011
Why does the letter P stand for momentum in Physics?
I asked myself this same question today in class. Well, answered the question "What is the symbol for momentum?" with p but wasn't heard so...
Anyways! I wondered why p stood for momentum. Mass obviously already takes M but why p? Momentum doesn't even have a p in it! One answer I found online suggested that the p came from the latin word "petere" meaning to go or to rush upon. Not sure how accurate that is but it sure beats the "all the other letters were used" answer.
Anyways! I wondered why p stood for momentum. Mass obviously already takes M but why p? Momentum doesn't even have a p in it! One answer I found online suggested that the p came from the latin word "petere" meaning to go or to rush upon. Not sure how accurate that is but it sure beats the "all the other letters were used" answer.
Monday, 4 July 2011
Relationship between angle and range of projectiles.
Today we learnt about the relationship between the angle a projectile is launched at, and the range the projectile travels. In pairs, we were given a sheet with a series of projectile simulations on them showing the angle, range, initial velocity and height. According to the simulations, two scenarios with different angles but the same initial velocity had the same range. 30° and 60° had the same range, as did 20° and 70°, and 35° and 55°. We also observed that the closer to 45° the simulations got, the further the range was, leading us to believe that 45° would be the best angle to launch a projectile at for maximum distance or range.
Monday, 27 June 2011
Refraction in Water Waves!
I found this site which I believe explains refraction in water waves well because not only does it have a lot of written content, but it also has diagrams to aid in the understanding of the text. The site also has specific important key words highlighted in red so they're clearly seen and can be further researched later.
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