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Textbook Expert
Textbook ExpertVerified Tutor
27 Oct 2021

Given information

We are given that:-

Distance between Sally and finish line   

Distance between Mary and finish line

Step-by-step explanation

Step 1.

For the runners to cross the finish line side-by-side, they must both reach the finish line in the same amount of time from their current positions.

Take Mary’s current location as the origin

For Sally:-

According to the second kinematics equation of motion.

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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