Speed, density and pressure
Pages
Speed, distance and time
Using speed as distance per unit time to find any quantity from the other two.
Average speed
Total distance divided by total time, not an average of the two speeds.
Density, mass and volume
Using density as mass per unit volume, with the units naming the formula.
The density of a mixture
Totalling mass and volume separately, never averaging the two densities.
Pressure, force and area
Using pressure as force per unit area, and why a smaller area raises pressure.
Practice
Practice
Speed, distance and time
Using speed as distance per unit time to find any quantity from the other two.
PracticeAverage speed
Total distance divided by total time, not an average of the two speeds.
PracticeDensity, mass and volume
Using density as mass per unit volume, with the units naming the formula.
PracticeThe density of a mixture
Totalling mass and volume separately, never averaging the two densities.
PracticeCompound measures review
Speed, density and pressure, rearranged and pushed through multi-step problems.