Rectilinear Motion Take-Home Exam - DEAD END

[mizzou0222]

Hi everyone.

I'm in crisis mode over this take-home exam I have due in 12 hours. I've posted the 4 problems I'm stuck on and ANY help would be a life-saver.

I can get all of them setup, but am completely clueless as to how to actually execute them.


I have a few questions in specific:

[Question 2] To determine the minimum stopping distance, wouldn't I need to know the mass of the block in order to calculate the normal force and, by extension, the force due to static friction?

[Question 5] ...what?

 

[ehild]

[Question 2] To determine the minimum stopping distance, wouldn't I need to know the mass of the block in order to calculate the normal force and, by extension, the force due to static friction?

No. Express the normal force in terms of m. It will cancel.


ehild