HELP car brakes to stop before cliff how do you find work

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    Brakes Car Work
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Homework Help Overview

The problem involves a car that needs to stop before reaching a cliff, with specific parameters such as weight, deceleration, and distance. The subject area includes concepts from physics related to work, energy, and motion.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the need for additional information, such as the initial velocity and friction of the road, to apply the work-kinetic energy theorem. There are questions about the components of the problem and the scalar nature of work.

Discussion Status

The discussion is ongoing, with participants highlighting the importance of providing an attempt and clarifying the problem's parameters. Some guidance has been offered regarding the necessary information to solve the problem, but no consensus has been reached.

Contextual Notes

There is a mention of forum rules requiring an attempt before receiving help, and the urgency of the deadline is noted by one participant.

wearegay
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A car and driver weighing 5710 N passes a sign station (bridge out in 23.1 m) She slams on her brakes and the car decelerates at a constant rate of 9.94 m/s^2. Accel of grav is 9.8 m/s^2. What is the ganitude of work done, stopping the car before it falls.

We don't know how to do it at all =/ help please!
 
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HELP! its due at 11 TONIGHT =)
 
I'm not sure how to answer your question, but if you read the forum rules, you need an attempt of some sort before you get any help. Most certainly, they will not do the question for you.

Looks like you're out of luck.
 
you have to know the friction of the road as well as the initial velocity in order to find out, then you would use the work-kinetic energy theorem.
 
You would also need to know the initial velocity and or the time that it takes for the car to stop, also, you were also talking in two components, and work is a scalar, and you didn't specify in what component. So yeah…

Sorry, cannot help you there.
 

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