Question 7 and 8 physics 20

earch 7. Carry out the following conversions using the unit analysis (the factor label) method. Round your final answer using the appropriate number of significant digits. ( 10 marks ) a) Convert 110 km/h to m/s. b) Convert 55 km/h to m/s. c) Convert 75 m/s to km/h. d) Convert 3.0 years to seconds. (The S.I. symbol for year is "a".) e) Convert 81 mg/d to g/a. Physics 20 7 Assignment 1 8. Rearrange each of the expressions so that the indicated variable is isolated on the left-hand side of the equality sign. Show all of your work. ( 15 marks ) a) Ek = _ mv ( isolate V ) b) Vf = Vi + at ( isolate t ) c) T = 2n m ( isolate k )