Car Braking: Calculating Acceleration from Applied Force

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Homework Help Overview

The discussion revolves around a physics problem involving a car's braking scenario, specifically focusing on calculating acceleration from the applied force. The subject area includes dynamics and forces acting on a moving vehicle.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants explore the relationship between applied force and acceleration, questioning the role of friction and net force in the context of the problem. There is a discussion about how to determine the applied force and its implications for calculating acceleration.

Discussion Status

The conversation includes varying interpretations of the forces at play, with some participants asserting that the applied force is the only force acting on the car, while others express confusion regarding the concept of net force and its relevance to the problem. Guidance has been offered regarding the identification of forces, but no consensus has been reached.

Contextual Notes

Participants are navigating assumptions about the forces involved, particularly the role of friction, and there appears to be a lack of clarity regarding the net force acting on the car during braking.

msimard8
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A 2.5 x 10^3 kg car os traveling due west at 30m/s when the brakes are applied, exerting a force of 5.0 x 10^3 [E]. What is the cars acceleration due to braking?

umm I do not know how to do this but i do know Net Force = ma. Thus Fapp - Ffric = ma. How do you figure out the applied force so i can determine the acceleration help.
 
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the applied force is the friction force.
 
ok the correct answer is 2.0 m/s. If there is no net force, how do you explain that
 
no. Fapplied = 5 x 10^3 N

and there is no friction force. the force applied by the brakes is the only force.
 

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