Or
Option 2
Upwards as positive:
Or
Downwards as positive:
Or
Option 3
Upwards as positive:
Or
Downwards as positive:
Or
Option 4
Or
Option 5
Or
Option 6
2.1 
Option 1 Downwards as positive:
Or Upwards as positive:
Tips:
There are more ways to answer this question. To view other options, click here. 
3 marks (3 x 1 mark) 

2.2 
Or
Tip: only two vertical forces are acting on block B; the upward tension in the rope and the weight of block B. 
2 marks (2 x 1 mark) 

2.3 
When a resultant/net force acts on an object, the object will accelerate in the direction of the force with an acceleration that is directly proportional to the force and inversely proportional to the mass of the object. Or The resultant/net force acting on an object is equal to the rate of change of momentum of the object in the direction of the resultant/net force. 
2 marks (1 x 2 marks) 

2.4 
How to approach this question:
Calculation of tension (Block B) Downwards as positive: ^{(1) } ^{(2 + 3) } Or Upwards as positive: ^{(1)} ^{(2 + 3) }
Calculation of mass (Block A) Upwards as positive:
^{(4)} ^{(5) } Or Downwards as positive: ^{(4) } ^{(5) }

5 marks (5 x 1 mark) Marking criteria:
formula
substitution to calculate tension
substitution to calculate the mass of block A
answer: 3,25 kg 

2.5 
How to approach this question:
Option 1 Upwards as positive: ^{(1) } ^{(2 + 3) }
^{(4) } ^{(5) } Or Downwards as positive: ^{(1)} ^{(2 + 3) }
^{(4) } ^{(5)} There are more ways to answer this question. To view other options, click here. 
5 marks (5 x 1 mark) Marking criteria:
formula
substitution of v_{i } and v_{f }
substitution of 9,8 m·s^{2}
to calculate Δ_{y }
answer: 2,09m 
Or
Option 2
Upwards as positive:
Or
Downwards as positive:
Or
Option 3
Upwards as positive:
Or
Downwards as positive:
Or
Option 4
Or
Option 5
Or
Option 6