How Do You Calculate Average Speed Over Different Speeds?

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Homework Help Overview

The discussion revolves around calculating average speed when traveling different distances at varying speeds. The specific scenario involves driving 1 kilometer at 14 km/h and another kilometer at 30 km/h, prompting questions about the average speed calculation.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the formula for average speed, which is total distance divided by total time. There are inquiries about how to determine the time taken for each segment of the journey based on given speeds.

Discussion Status

Participants are exploring the relationship between speed, distance, and time. Some have provided insights into the formulas involved, while others express uncertainty about calculating time based on speed. There is no explicit consensus, but guidance has been offered regarding the definitions of speed and velocity.

Contextual Notes

Some participants question the distinction between speed and velocity, noting that they often use the terms interchangeably. There is also a mention of constraints on providing direct answers, indicating a focus on guiding understanding rather than solving the problem outright.

monkeycrazy15
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1. We drive a distance of 1 kilometer at 14 km/h. Then we drive an additional distance of 1 kilometer at 30 km/h. What is our average speed?



2. average speed= total distance / total time


3. 22mp/h
 
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If your velocity is 14km/h, then if you drove a distance of 14km it would take you 1 hour, as I'm sure you're aware. Thus if you only drove a distance of 1 km . . .

What is the formula for velocity? Think about the dimensions (units) of velocity.
 
the formula for velocity is

v= distance / time


and i think the 14 km/h is regarding the speed
 
Yes, you're right. I tend to use velocity as synonymous with speed, which isn't correct. Often it will be negligible, though.

Speed=Distance/Time

Just plug and crank, now.
 
but i don't know how to find the time
 
Speed=Distance/Time

If your speed is 14km/h,
and you travel a distance of 1 km,
then the time is ?

I'm sorry, I'm not sure I can walk you much farther without giving you the answer, but let me know if this doesn't help and I'll think of another way. =)
 

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