Chapter 1: Introduction
Conceptual Questions
1.1 What is Biomechanics?
- What is biomechanics?
1.2 Physical Quantities and Units
- Identify some advantages of metric units.
- What are the SI base units of length, mass, and time?
- a)What is the difference between a base unit and a derived unit?
(b) What is the difference between a base quantity and a derived quantity?
(c) What is the difference between a base quantity and a base unit? - For each of the following scenarios, refer to Table 1.2 to determine which metric prefix on the meter is most appropriate for each of the following scenarios.
(a) You want to tabulate the mean distance from the Sun for each planet in the solar system.
(b) You want to compare the sizes of some common viruses to design a mechanical filter capable of blocking the pathogenic ones.
(c) You want to list the diameters of all the elements on the periodic table.
(d) You want to list the distances to all the stars that have now received any radio broadcasts sent from Earth 10 years ago.
1.3 Accuracy and Precision
- (a) What is the relationship between the precision and the uncertainty of a measurement?
(b) What is the relationship between the accuracy and the discrepancy of a measurement?