Car and Train with Average Velocity

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Homework Help Overview

The discussion revolves around a problem involving a train and a car traveling from the same station at different speeds. The participants are addressing how to determine the distance at which the car catches up to the train and the car's average velocity in meters per second.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants are examining the distance traveled by the train before the car starts and questioning the correctness of the initial calculations regarding the distance at which the car catches up. There are also inquiries about converting the car's velocity into meters per second.

Discussion Status

The discussion includes various perspectives on the calculations, with some participants expressing doubt about the initial answers provided. There is an ongoing exploration of the correct distance and velocity, but no consensus has been reached yet.

Contextual Notes

Participants are working under the constraints of the problem as stated, with specific attention to the time of departure and the speeds of both vehicles. There is a focus on ensuring that the calculations align with the physical scenario described.

wolves5
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A train leaves the train station at 9:00 am and travels at a constant speed of vt = 65 km/hr on a straight track. At 10:30 am, a car leaves the same train station and travels in the same direction at vc = 115 km/hr on a road next to the train track.

a.How far from the station is the place where the car catches up with the train?
b. What was the car's average velocity in meters/second?

For this question, I did part a. I got my answer to be 60 km. I have no idea how to find the average velocity using this.
 
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Are you sure about part a ?
Just calculate how far is the train from the station at 10:30, when the car starts.
That distance cannot be longer than the distance at where the meet.
 
First part is simply wrong! When the car is about to start the train has already traveled 97.5 km!
 
Sorry about that! The first part answer is 224.25 km. How do I do the second part?
 
The question is velocity of the car in meters/second.

ehild
 

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