Answer the following questions about acceleration and velocity–time graphs:
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions about acceleration and velocity–time graphs:
(i) Define acceleration and state its SI unit.
(ii) Explain, with reason, how the slope of a velocity–time graph represents acceleration.
(iii) With neat sketches of straight-line velocity–time graphs, describe what information is conveyed by
(a) a line sloping upward to the right,
(b) a horizontal line, and
(c) a line sloping downward to the right.
(iv) Distinguish between uniform and non-uniform acceleration on the basis of the appearance of a velocity–time graph.