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01_InstSolManual_PDF_Part16 - 1-16 Chapter 1 1.50 Set Up...

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1.50. Set Up: Use coordinates for which is east and is north. The driver’s vector displacements are: Solve: north of east. This result is confirmed by the sketch in Figure 1.50. Figure 1.50 1.51. Set Up: We know that an object of mass 1000 g weighs 2.205 lbs and Solve: and The acceptable limits are 142 g to 149 g. Reflect: The range in acceptable weight is Since the range in mass of 7 g is consistent. As we will see in a later chapter, mass has units of kg or g and is a different physical quantity than weight, which can have units of ounces. But for objects close to the surface of the earth, mass and weight are proportional; we can therefore say that a certain weight is equivalent to a certain mass. 1.52. Set Up: Use your calculator to display We know that 1 and Solve: The approximate expression is accurate to two significant figures. 1.53. Set Up: Estimate 12 breaths per minute. We know and Solve: (a) The volume of air breathed in one day is The mass of air breathed in one day is the density of air times the volume of air breathed:
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