How Fast Was the Car Going Before It Hit the SUV?

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Homework Help Overview

The problem involves a collision between a car and an SUV, where the car's speed before the collision needs to be determined based on the masses of the vehicles, the distance they slide after the collision, and the coefficient of friction between the tires and the pavement.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are discussing the known variables and the relevant formulas that could be applied to solve for the car's speed. There is an emphasis on understanding what has been attempted so far.

Discussion Status

The discussion is ongoing, with participants seeking to clarify what has been figured out and what formulas might be relevant. There is no explicit consensus yet, and the focus appears to be on gathering information and understanding the problem setup.

Contextual Notes

There is a mention of a specific resource link, which may contain relevant information or formulas, but its purpose is not clarified in the discussion.

Ckoskie
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Okay here is my question I have spent 6 hours on it and I can't get the answer. the Question is:
a 920kg car is driving down the road and hits a 2300kg SUV stopped at a red light. The two cars lock together and their break lock. they then slide forward 2.8m. A police officer know that the coeficient of friction between rubber and pavement is 0.8. Whith this he can figure out the speed at which the car was going when it hit the SUV. Find the speed of the car just before the collision.

I really hope someone can help me.
 
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If you don't be careful someone is going to ask what you have figured out so far, and what formulas that you know you can apply.
 
Last edited:
Ckoskie,

What have you figured out so far, and what formulas that you know you can apply??
 
http://www.phy.olemiss.edu/~jgladden/phys213/hw05_ch_07.pdf
What is this?
 
Last edited by a moderator:

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