Physics (AS & A Level) · Oct / Nov 2016 · Paper 22 · Question 1

force / area (normal to the force) [1]

(p = F / A so) units: kg m s–2 / m2 = kg m–1 s–2 [1]

allow use of other correct equations: e.g. (∆p = ρg∆h so) kg m–3 m s–2 m = kg m–1 s–2 e.g. (p = W / ∆V so) kg m s–2 m / m3 = kg m–1 s–2

units for m: kg, t: s and ρ: kg m–3 units of C: kg / s (kg m–3 kg m–1 s–2) 1/2 or units of C2: kg2 / s2 kg m–3 kg m–1 s–2 units of C: m2 [3]