Summary

The important messages for you to take home today have been

• Motion with constant acceleration has a parabolic and is fully characterized by three constants: , and a. Differentiating the expression we have .
• Time can be eliminated from expressions relating these quantities to yield the very useful eqn
• In the absence of the air drag force a free falling object close to the surface of the earth performs motion with constant acceleration g=9.81 m/s.
• Vectors are used to handle physical quantities that have direction as well as magnitude.
• A vector has a unique resolution into its components along any chosen orthogonal coordinate system.