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Serendipitydo
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Homework Statement
A physics student slides a 2.0kg textbook along the laboratory bench to her friend. She imparts to the book an initial velocity of 2.70m/s. μ=0.20. How far away is her friend if the book comes to a stop right in front of her friend
Vi= 2.70m/s μ=0.20 m=2.0kg Vf= 0m/s d=?
Homework Equations
The Attempt at a Solution
We were taught to figure out everything we could possibly figure out, relevant or not.
FN=Ff (no vertical movement)
Ff=μFN
Ff=(0.20)((2.0kg*9.81m/s2))
Ff=20N
Fnet(Fa-Ff)=ma then use Vf2=Vi2+2ad and solve for d? I just don't know how to find Fa or acceleration with the given variables. Is Fnet equal to Ff in the direction opposite of acceleration/Fa? Does that help?
We haven't done anything with μ and mass combined with velocity to find distance.