Answer the following questions with proper reasoning.
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions with proper reasoning.
(a) State the condition under which the average speed of a particle equals the magnitude of its average velocity over a given time interval.
(b) A motorcyclist travels 12 km along a straight road and then 5 km back along the same road in the opposite direction. The entire motion takes 30 min. Show that the average speed is greater than the magnitude of the average velocity.
(c) Can the magnitude of average velocity ever exceed the average speed of a body? Give a reason for your answer.