PhysI_09152009

PhysI_09152009 - ax a C y a A B aabbs 171.101 General...

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s b b a a C A a a y θ a x θ 09-10-2009 171.101, General Physics for Physical Science Majors I Vectors Motions in different dimensions are independent of one another; a motion in one dimension does not affect a motion in another dimension. i.e. Horizantal (x) vs. Vertical motions (y) Example: A ball thrown to the side (with no downward or upward motion) hits the ground at the same time as a ball dropped at the same time at the same height. Vector Components AC is the vector sum of AB and BC (not the same as algebraic addition). Commutative Law, as well as any other algebraic law, applies to 2D vectors, but not to 3D vectors (Example in class, rotation of book). Also, any vector can be moved around…the most important thing to keep is the magnitude and direction of the vector (Vectors DO NOT have position). a + b = s = b + a 2D vectors have both horizontal and vertical components. y x e.g. The components of a are (a x , a y ). Remember, scalar quantities, such as temperature, only have one component each.

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This note was uploaded on 10/01/2009 for the course DOGEE 171.101 taught by Professor Henry during the Fall '09 term at Johns Hopkins.

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PhysI_09152009 - ax a C y a A B aabbs 171.101 General...

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