Physics Lesson: Vector Components Part 2 for high school

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Education

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• vectors
• components
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• physicseh

[Gutsyndicate]

physics is stupid, there are so much pitfalls and unnecessary obstacles just to solve one problem.

sign could be negative or positive depending on the direction, the angle could be plus or minus 180 depending on the quadrant, the acceleration could be negative or positive. equations could be different depending on the horizontal or vertical component, on top of that there is a drawing or diagram, and unit conversions and dimensional analysis also at the end, just for one stupid question.

[PhysicsEH]

@Gutsyndicate True but when you get it you understand how the universe works. Be proud of what you've learned because so few ever try to understand physics.

[TheInuLogical]

I'm in physics honors and my teacher goes waaay too fast. This helped a looot!

[PhysicsEH]

@TheInuLogical I'm glad to hear that they helped. Good luck with your course.

[mozahemi]

I lost you when you wrote Ay= 8 cos 40! isn't Ay cuz of y you should write Ay= 8 sin 40?

thats what you guys did in the previews video 0.o?

[PhysicsEH]

@mozahemi Hi. Ay is not always "sin", sometimes you use "cos". What you need to know is that once you draw the triangle and the angle, you need to figure out if Ay is the opposite side or the adjacent side of the triangle. If it is the adjacent side, use cos, if opposite side, use sin. The decision to use sin or cos depends on whether Ay is the opposite or adjacent. In this video Ay is adjacent so you write Ay=8cos 40. I hope this helps.

[KarlaAllure]

how did you get this Ax= -5.1 m and Ay= -6.1?

How do you know that? :O

[Bakugantsuvai1]

What if my teacher gives me a crazy question and the triangle is not a right angle?

[XsoEmiXD]

@PhysicsEH Thanks, and I actually do understand a little of it. I am in advanced math, and wanna keep it that way... :)

[PhysicsEH]

@XsoEmiXD If you even understand a little of this you are doing very well. Keep it up.