2.02 Equations of motions & 2.03 Vectors in 2D

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Last updated 7:17 PM on 9/18/26
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8 Terms

1
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What are the 5 kinematic equations?

  • X = Xo + Vot + 1/2at²

  • X = Xo + Vt - 1/2at²

  • V² = (Vo)² + 2aX - 2aXo

  • V = Vo + a(t)

  • X = Xo + Vavg(t)


2
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What are equivalent vectors and opposite vectors?

  • Equivalent: Same magnitude and direction

  • Opposite: Same magnitude, opposite direction


3
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How to add vectors?

Add them head to tail.

  • Provides direction


4
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How to subtract vectors?

  • Inverse the direction of the vector that occurred after, and add them together.

  • i.e., add opposite vectors.


5
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How to multiply vectors?

Only affects magnitude, unless the magnitude is negative, in which the direction also changes.

6
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What are the three main ways to solve 2+ dimension problems?

  • Sine, cosine laws, geometry, etc.

  • Scale diagrams

  • Component vectors


7
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How to use scale diagrams?

Draw event, estimate the length.

  • has uncertainty


8
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How to use component vectors?

Split all vectors into x and y, add together, and use tangent to find angle of displacement.