A student is revising the concepts of straight-line motion
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A student is revising the concepts of straight-line motion.
(i) Define (a) distance and (b) displacement.
(ii) Describe two important differences between distance and displacement with reference to their physical nature and dependence on direction.
(iii) A girl walks 60m east from her classroom to the laboratory and then returns the same way back to her classroom. Explain, without doing any numerical calculation, why her distance travelled is not zero while her displacement is zero.