Physics Skills Remember 1.What operation you to the left side of the equation,do the same to the right hand side 2.Anything divided by itself equals 1

Solve the formula for w A = lw = ANAN A = Nw Nw N ANAN =w Example :1

Solve the formula for a g = a + w g - w = a + w - w g - w = a Example:2

Solve the formula for t W = R + Ht W - R = R - R + Ht W - R = Ht W - R H = Ht H W - R H =t Example 3

Solve the formula for h A = = A = bh = 1212 bh (A) 2 () 1212 bh bh2A 2A b = bh b 2A b = h Example 4

Solve the formula for u v = u + at

Solve the formula for u v = u + at v = u + at v = u + at v - at = u + at - at v - at = u u = v- at

Solve the formula for R C = F + Rn

Solve the formula for Solve the formula for R C = F + Rn C = F + Rn C = F + Rn C - F = F - F + Rn C - F = Rn C - F n = Rn n C - F n = R

Solve the formula for u s = ut + at

Solve the formula for u or make the u the subject s = ut + at 2 s = ut + at 2 s = ut + at 2 2(s) = 2(ut) + 2( at 2 ) 2s = 2ut + at 2 = 2s - at 2 2t =u s - at 2 = 2ut + at 2 - at 2 2s - at 2 = 2ut 2ut 2t = stst - at 2

Exercise 1 Rearrange the following equations to show how you would calculate the quantity in bold after each equation. 1.Speed = Distance/Time TIME 2.Moles = Mass/ Molar Mass MASS 3.Concentration = Moles/Volume VOLUME 4.Density = Mass/VolumeVOLUME Exercise 2 Rearrange the ideal gas equation to show the calculation needed to find each of the following quantities. Ideal gas equation PV = nRT a)P – Pressure b)V – Volume c)n – Number of moles d)T – Temperature More Exercises