Speed
Maths: Edexcel IGCSE Higher, topic 4.4.4
Formula Triangles
To get any of the three quantities as the subject of the formula, cover it up in the formula triangle and put whatever remains on the other side of the triangle.
Speed
- Speed is the distance travelled per unit of time.
- Common units for speed are kilometres per hour (km/h), miles per hour (miles/h or mph) and metres per second (m/s).
Density
- Density is the mass per unit of volume.
- Common units for density are kg/m3 and g/cm3.
Pressure
- Pressure is force acting per unit of area.
- Common units for pressure are N/m2 or pascals (Pa).
Test yourself on Speed
Using the formula triangle shown, what is the correct equation for speed?
Using the formula triangle shown, what is the correct equation for time?
Using the formula triangle shown, what is the correct equation for distance?
Using the formula triangle shown, what is the correct equation for density?
Using the formula triangle shown, what is the correct equation for mass?