Recent content by kixtoby

Sorry, I didn't realize I had replied to you. I started to type and must have hit reply by mistake. So for this problem, I know that friction does work: f*d which is is equal to the initial kinetic energy (1/2)mv^2 Then, F = mu * mg where my goal is to solve for mu (coefficient of kinetic...

Original I am very lost. I don't think I understand this problem at all.

Can I multiply mass on each side to cancel them out? Then the equation would be: fd=1/2v^2

how would I calculate acceleration from the information given? And yes, I did draw one, although I wasn't really sure what values to plug in...

Find a way to cross it out?

I noticed I forgot to square...was that my only error? I also was not sure about plugging in gravity, but no mass was given in the problem... F(10)=1/2(9.8)(30)^2 F(10)=4410 F=441

I am honestly not sure, I guess what I was trying to find was the force? But I need to find the coefficient of kinetic friction between the object and the floor. I guess I'm not sure what direction I need to go to solve this.

I have been stuck on this physics question: An object is sliding along a flat surface with an initial speed of 30 m/s. What must the coefficient of kinetic friction be between the object and the surface if the object slides to a stop in 10m? What would be the speed of the object after it had...