For any activities in this class using your body weight, you can use your approximate or ideal weight Finding your mass in kg from your weight in lbs. is a 2step process: My weight is 149 lbs 1) Convert your weight in lbs. to your weight in SI units, N w = ? N Use either: 1 t llbs. = 4.45N w= ?lbs. p IN = 0.225 lbs. W 2 Note: N = kg m/s2 2) Use w =mg in SI units, to find your mass in kg m = ? kg 3pt m