A speedboat increases its speed uniformly from vi 5 20.0 m/s to vf 5 30.0 m/s in a distance of 2.00 3 102 m. (a) Draw a coordinate system for this situation and label the relevant quantities, including vectors. (b) For the given information, what single equation is most appropriate for finding the acceleration? (c) Solve the equation selected in part (b) symbolically for the boats acceleration in terms of vf , vi, and Dx. (d) Substitute given values, obtaining that acceleration. (e) Find the time it takes the boat to travel the given distance.

Fluids Pressure and Density ● Gas- molecules are free and interacting, and are considered fluids ○ Compressible- a consequence of empty space between molecules ● Liquids- molecules are bonded weakly and slide past each other ○ Incompressible and takes the shape of the container Density ● Liquids are characterized by their density ○ 3 ● Units are kg/m ● Since liquids occupy a volume it is important to remember how to convert a volume. 3 Remember that volumes should be in m basic SI unit. Pressure ● Pressure is most easily defined as force per unit area ○ P=F/A ● Atmospheric Pressure ○ ● Since atmospheric p