Kinematics: 9.60 km Skid Marks, Initial Velocity Calculation

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Homework Help Overview

The discussion revolves around a kinematics problem involving a car that left skid marks measuring 9.60 km while decelerating at -2.00 m/s². The original poster seeks to determine the car's initial velocity based on this information.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants inquire about the original poster's attempts to solve the problem and question the accuracy of the skid mark length. There is a focus on ensuring that the original poster engages with the problem rather than receiving direct answers.

Discussion Status

The conversation is ongoing, with participants encouraging the original poster to share their thought process. Some guidance has been provided regarding the nature of assistance available on the forum, emphasizing the importance of personal input in the learning process.

Contextual Notes

There is a light-hearted acknowledgment of the unusual length of the skid marks, suggesting that the scenario may involve assumptions about the car's speed and performance.

mochilili
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The skid marks left by a decelerating car were 9.60 km long. If the car's acceleration was -2.00 m/s^2, what was the car's initial velocity?


any help is much appreciated!
 
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Welcome to PF!

What have you tried so far? Are you sure the skid marks are 9.6 km long?
 
thanks!

yep, the skid marks are that long. Its suppose to be a very fast car, lol.
 
mochilili said:
thanks!

yep, the skid marks are that long. Its suppose to be a very fast car, lol.

That looks more like a rocket on wheels.
 
Fair enough. What have you tried so far then? On this forum you can't receive help without some input from yourself. We help with homework we don't do it for you. :smile:
 
lol, hey guys, i figured it out. i know i know, its probably the easiest question yall have seen, but its my 1st week in physics, lol.
 
oh ic kurdt, cool, i'll do that from now on.
 
No problem. It just helps the student learn rather than being handed things on a plate and not learning anything. If you have any more questions please come back. :smile:
 

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