3. In a system designed to work out the tax to be paid: An employee has £4000 of salary tax free. The next £1500 is taxed at 10%. The next £28000 after that is taxed at 22%. Any further amount is taxed at 40%. To the nearest whole pound, which of these groups of numbers fall into three DIFFERENT equivalence classes?

What is free fall acceleration?

Explain what is free fall acceleration?