Summary

To summarize the messages from todays lecture

• Physicists seek to understand our material universe by developing mathematical theories and subjecting them to rigorous experimental tests.
• Physical quantities and results of measurements carry a unit as well as a numerical value
• Solve problems symbolically first then introduce numbers with their respective units.
• Dimensional analysis can be a powerful tool for deriving empirical expressions for physical quantities.
• The period of a simple pendulum is
• The speed of relaxed walking is

Any questions at this point. If not I'll see you tomorrow when we shall talk about the description of motion: kinematics.