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Biomechanics
Math Review
Question | Answer |
---|---|
Scalar | -magnitude only -mass -volume -pressure -density -speed |
Vector | -magnitude & direction -force -weight -pressure -torque -velocity |
Vector resolution | Vectors may be resolved into perpendicular components. The vector composition of each pair of components yields the original vector |
Vector compositions of the same direction | adding magnitudes |
Vector composition of different directions | subtracting magnitudes |
what is always the resulting vector | hypotenuse |
How do you find Sin θ | opposite/hypotenuse |
How do you find opposite | hypotenuse X Sin θ |
How do you find adjacent | hypotenuse X Cos θ |
How do you find Cos θ | adjacent/hypotenuse |
How do you find Tan θ | opposite/adjacent |
Pythagorean Theorem | Opposite^2 + Adjacent^2 = Hypotenuse^2 |