Answer the following questions related to the quantities average speed and average…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions related to the quantities average speed and average velocity.
(i) Define average speed and average velocity.
(ii) Give one concrete example of a journey in which the average speed is non-zero but the average velocity is zero. Explain your answer briefly in 3–4 lines.
(iii) Derive, step by step, the numerical conversion factor between 1km/h and m/s. Show how the basic SI units of length and time lead to this factor.