In a 5000 m race, the athletes run 1212 laps; each lap is 400 m. Kara runs the race at a constant pace and finishes in 17.4 min. Hannah runs the race in a blistering 15.3 min, so fast that she actually passes Kara during the race.

In a 5000 m race, the athletes run 1212 laps; each lap is 400 m. Kara runs the race at a constant pace and finishes in 17.4 min. Hannah runs the race in a blistering 15.3 min, so fast that she actually passes Kara during the race.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter4: Forces In One Dimension

Section: Chapter Questions

Problem 2STP

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Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

In a 5000 m race, the athletes run 1212 laps; each lap is
400 m. Kara runs the race at a constant pace and finishes
in 17.4 min. Hannah runs the race in a blistering 15.3 min,
so fast that she actually passes Kara during the race.

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Step 1: Calculation of speed of Hannah and kara:

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Step 2: A number of laps taken by Hannah when she passes Kara

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