Foundations in Physics 0.0 / 5 ? PhysicsFoundations in PhysicsA2/A-levelOCR Created by: SophieJessica0712Created on: 27-11-17 11:18 Physical quantities have what? A numerical value and a unit 1 of 19 What does S.I stand for? Systeme Internationale 2 of 19 What is the S.I unit for mass? kg 3 of 19 What is the S.I unit for length? m 4 of 19 s is the S.I unit for what? Time 5 of 19 What is the S.I unit for current? A 6 of 19 What is the S.I unit for temperature? K 7 of 19 What is the S.I unit for an amount of substance? mol 8 of 19 Give an example of a derived unit of S.I base units Momentum = kg m S-1 and Density = kg m-3 9 of 19 You can check the what of physical equations using S.I base units? Homogeneity 10 of 19 Name some prefixes and their symbols Pico (p), Nano (n), Milli (m), Centi (c), Deci (d), Kilo (k), Mega (M), Giga (G), Tera (T) 11 of 19 Define the word 'precision' The quality, condition, or fact of being exact and accurate 12 of 19 Define the word 'accuracy' The quality or state of being correct or precise 13 of 19 What is a scalar quantity? A quantity with only magnitude 14 of 19 What is a vector quantity? A quantity with both magnitude and direction 15 of 19 What is vector addition? Adding vector components 16 of 19 What is vector subtraction? Subtracting vector components 17 of 19 How do you resolve a vector into two perpendicular components? Fx = F cos θ; Fy = F sin θ 18 of 19 What can vector triangles be used to determine the resultant of? Any two coplanar vectors 19 of 19

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