Rectilinear Motion Take-Home Exam - DEAD END

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SUMMARY

The forum discussion centers on a take-home exam related to rectilinear motion, specifically addressing the calculation of minimum stopping distance. The key point established is that the mass of the block is not necessary for determining the normal force, as it can be expressed in terms of mass (m) and will ultimately cancel out in the calculations. This insight is crucial for solving the problems presented in the exam effectively.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with concepts of force, mass, and friction
  • Basic knowledge of algebraic manipulation in physics
  • Ability to interpret and solve physics problems involving rectilinear motion
NEXT STEPS
  • Review the principles of static friction and normal force calculations
  • Study examples of minimum stopping distance problems in physics
  • Practice algebraic manipulation of equations in physics contexts
  • Explore additional resources on rectilinear motion and its applications
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those preparing for exams involving motion concepts, as well as educators looking for insights into common student misconceptions regarding forces and motion.

mizzou0222
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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?
 

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mizzou0222 said:
[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
 

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