Read the following statements carefully and answer the questions that follow:
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Read the following statements carefully and answer the questions that follow:
(i) "Pressure acts in all directions at a point in a fluid; yet pressure is treated as a scalar quantity."
(ii) "Work done can be positive, negative or zero depending on the angle between force and displacement, but work is not regarded as a vector."
(iii) "Angular displacement is said to be a vector even though two finite angular displacements are not strictly additive by the parallelogram law."
For each statement:
(a) State whether the statement is TRUE or FALSE.
(b) Provide a detailed explanation, using relevant physical reasoning and definitions, to support your answer.