Average Speed Help: Get to Church On Time!

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Homework Help Overview

The problem involves calculating the average speed needed to reach a destination on time, given a specific distance and an initial delay due to construction. The subject area pertains to average speed and time management in a travel scenario.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss calculating the distance traveled in the initial time frame and determining the remaining distance and time to find the required average speed for the rest of the trip.

Discussion Status

Some participants have provided guidance on breaking down the problem into manageable parts, focusing on distance and time calculations. There is an ongoing exploration of the necessary steps to arrive at a solution.

Contextual Notes

The original poster has a specific time constraint of 33 minutes total and has already spent 18 minutes traveling at a reduced speed, which influences the remaining time and distance calculations.

jwang023
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average speed help!

Homework Statement



On your wedding day you leave for church 33.0 minutes before the ceremony is to begin, which should be plenty of time since the church is only 10.5 miles away. On the way, however, you have to make an unanticipated stop for construction work on the road. As a result, your average speed for the first 18.0 minutes is only 5.0 mi/hr. What average speed do you need for the rest of the trip to get you to church on time?

Homework Equations



average speed= distance/ time

The Attempt at a Solution

 
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One approach is to to simply figure out how far you have traveled in the first 18 minutes.

Use your eqn. Then figure out how far you have left to go, and the time available to do it. This then will dictate the average speed required to arrive on time.
 


Thanks for breaking it down!
 


No problem, welcome to PF.
 

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