Finding the KE and the energy will be lost due to friction?

AI Thread Summary
The discussion revolves around determining kinetic energy (KE) and the impact of friction on energy loss during motion. Participants suggest starting with the deceleration to calculate the friction force, which can help answer subsequent questions. It is noted that if an object stops, it loses all its energy, making that aspect trivial. There is confusion regarding the specific values for deceleration, with two different figures mentioned. Overall, the conversation emphasizes the importance of understanding the relationship between motion, friction, and energy loss.
ktlee
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rdjsbw

shsjd
 
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Welcome to PF, ktlee.
I have a thought that doesn't match the order of the questions, but here it is FWIW.
You have all the information for the coasting part of the motion. You can deduce the friction force from the deceleration, answering question 5 first, then 3,4 and 6. Isn't 2 trivial - it loses all of its energy because it stops.
 
then would 5 be .4041 m/s^2? or .9526 m/s^2?
 
The question is no longer showing in the first post and I forget what it was!
 

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