Scalars and vectors 0.0 / 5 ? PhysicsEquations and FormulaeIGCSECIE Created by: KristenvermaakCreated on: 24-03-23 06:57 What two categories can quantities be divided into? Scalars and vectors. 1 of 9 What are scalars? Scalars are quantities with no direction and only magnitude. E.g. speed, mass, distance. 2 of 9 What are vectors? Vectors are quantities that have both magnitude and direction. E.g. displacement, velocity, weight. 3 of 9 How are vectors represented? By arrows. The direction of the arrowhead indicates the direction of the vector. The length of the arrow indicates the magnitude of the vector. 4 of 9 What is the resultant vector? The resultant vector is the combination of vectors at right angles to one another. 5 of 9 How do you calculate the vector? With a graph or with Pythagoras's theorem. 6 of 9 How do you calculate the resultant force? Resultant force (FR)= Effect of force 1 (F1) + effect of force (F2). 7 of 9 What is the Pythagoras theorem equation? c2= a2+b2 8 of 9 What is the mnemonic of Pythagoras theorem? SOH-CAH-TOH 9 of 9

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