Unit 1 General physics
Notes

ExampleA Formula One car has a mass of 640kg (including the driver). When the engine exerts a driving force of 29000N, the opposing frictional force is 800N. Calculate the acceleration.
Step 1 Draw a diagram showing the forces acting on the object and their directions.
Step 2 Calculate the resultant (unbalanced) force.
F=29000 − 800=28200N
F = 29000 − 800 = 28200N Step 3 List all the information in symbol form and change into appropriate and consistent SI units if required.
F=28200N
m=640kg
a=?
Step 4 Use and rearrange the correct formula.
F=ma => a= F
mStep 5 Calculate the answer by putting the numbers into the formula.
a = F
m= 28200
640= 44.06m/s^{2} = 44m/s^{2}
ALWAYS REMEMBER TO STATE THE UNIT FOR CALCULATED QUANTITIES.