Ball A is projected vertically upwards at a velocity of 16 m∙s-1 from the ground. Ignore the effects of air resistance. Use the ground as zero reference.
1.Calculate the time taken by ball A to return to the ground.(2)
2.Sketch a velocity-time graph for ball A.(2)
Show the following on the graph:
(a) Initial velocity of ball A (1)
(b) Time taken to reach the highest point of the motion (1)
(c) Time taken to return to the ground (1)
ONE SECOND after ball A is projected upwards, a second ball, B, is thrown vertically downwards at a velocity of 9 m∙s-1 from a balcony 30 m above the ground. Refer to the diagram below.
Calculate how high above the ground ball A will be at the instant the two balls pass each other. (6)
The letters A to D in the table below represent four organic compounds.
Use the information in the table to answer the questions that follow.
1.1.Write down the:
1. Letter that represents a ketone 
2.Structural formula of the functional group of compound C  3.General formula of the homologous series to which compound A belongs  4.IUPAC name of compound A  5.IUPAC name of compound B  1.2.Compound D is a gas used in cigarette lighters
1.To which homologous series does compound D belong?  2.Write down the STRUCTURAL FORMULA and IUPAC NAME of a structural isomer of compound D  3.Is the isomer in QUESTION 1.2.2 a CHAIN, POSITIONAL or FUNCTIONAL isomer?  1.3.Compound D reacts with bromine (Br2) to form 2-bromobutane. Write down the name of the:
1.Homologous series to which 2-bromobutane belongs  2.Type of reaction that takes place  
The flow diagram 1 below shows two organic reactions. The letter P represents an organic compound.
Use the information in the flow diagram to answer the questions that follow. Write down the:
1.Type of reaction of which Reaction 1 is an example (1)
2.STRUCTURAL FORMULA of the functional group of ethyl propanoate (1)
3.IUPAC name of compound P (1)
Reaction 2 takes place in the presence of an acid catalyst and heat. Write down the:
4.Type of reaction of which Reaction 2 is an example (1)
5.NAME or FORMULA of the acid catalyst (1)
6.STRUCTURAL FORMULA of the alkene (2)
Write down the: Diagram 2
1.STRUCTURAL FORMULA of the monomer that is used to prepare the above polymer (2)
2.Type of polymerisation reaction (ADDITION or CONDENSATION) that is used to prepare this polymer (1)