Two cyclists, A and B, travel the same straight 40km route but use different patterns of speed.
Cyclist A:
• First 10km at 15km/h,
• Next 20km at 5m/s,
• Last 10km at 12m/s.
Cyclist B:
• First 20km at 600m/min,
• Remaining distance at 18km/h.
Answer the following.
(a) Convert every speed used by cyclist A into m/s.
(b) Convert both speeds used by cyclist B into m/s.
(c) Calculate the total time taken by each cyclist to complete the route.
(d) Who completes the route first and by how many minutes?
(e) Briefly comment on how a slower segment can affect the overall average speed of a journey.