Physics Help: Calculating Breaking Distance with -9000 N Force

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Homework Help Overview

The discussion revolves around a physics problem involving the calculation of breaking distance for a car subjected to a force. The context includes concepts from mechanics, specifically Newton's laws and kinematics.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • The original poster expresses confusion about how to approach the problem, particularly regarding the lack of time or acceleration information. Some participants suggest using Newton's second law to find acceleration from the given force and mass, while others mention using kinematic equations to relate velocity, acceleration, and distance.

Discussion Status

The discussion is ongoing with participants providing guidance on how to proceed with the calculations. There is no explicit consensus yet, but suggestions for potential approaches have been made.

Contextual Notes

The original poster indicates a lack of familiarity with the relevant formulas and concepts, which may impact their ability to engage with the problem fully.

emma123
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hi this is my first year in physics and i am already confused on it. I really need help on the following question: "The force of -9000 N is used to stop a 1500 kg car traveling at 30 m/s. What is the breaking distance is needed to bring the car to a halt?" I have no idea which formula to use or where to begin since i don't have the time or acceleration. Please help me. Thanks!
 
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You have a force and a mass, you can find the acceleration using Newton's 2nd law.
 
you already have "v", once you find "a" you can use one of those kinematic equations to find "d".
 
Thanks A Bunch!
 

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