A student starts from his physics classroom considered to be origin, walks 20 m down the corridor, then stops, turns around and walks 5 m back to his classroom. He stops 15 m from the door. Total time of motion is 25.0 sec. What is his average speed?

A student starts from his physics classroom considered to be origin, w

1.	A student starts from his physics classroom considered to be origin, walks 20 m down the corridor, then stops, turns around and walks 5 m back to his classroom. He stops 15 m from the door. Total time of motion is 25.0 sec. What is his average speed?
Answer» A student starts from his physics classroom considered to be origin, walks $20 m$ down the corridor, then stops, turns around and walks $5 m$ back to his classroom. He stops $15 m$ from the door. Total time of motion is $25.0 s e c$ . What is his average speed?

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A student starts from his physics classroom considered to be origin, walks 20 m down the corridor, then stops, turns around and walks 5 m back to his classroom. He stops 15 m from the door. Total time of motion is 25.0 sec. What is his average speed?

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