What Is the Skater's Acceleration on the Rough Ice?

AI Thread Summary
A skater initially moving at 8.0 m/s slows down to 6.0 m/s while crossing a 5.0-meter patch of rough ice, and the goal is to determine her acceleration during this transition. The relevant equation is v² = v₀² + 2a(d - d₀), where v and v₀ are the final and initial velocities, respectively, and d and d₀ represent distances. There is confusion regarding the algebraic manipulation of the formula, particularly in isolating the acceleration variable 'a.' Participants emphasize the importance of following standard algebraic rules without switching the positions of variables incorrectly. Properly setting up and solving the equation is crucial for finding the correct acceleration.
Ashkon
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Homework Statement


A skater moving on a frictionless ice at 8.0 m/s hits a 5.0-m-wide patch of rough ice. She slows steadly, the continues at 6.0 m/s. What is her acceleration on the rough Ice

Homework Equations


v2 = vo 2 + 2a (d-do)

The Attempt at a Solution


I have tried to set up the formula but I'm not sure how to do it properly.

a = vo 2 + 2v2 (d-do)
 
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v and v0 are the final and initial velocities.
d and d0 are the distances from the skater's starting point to the end and beginning of the rough ice
 
Ashkon said:

Homework Statement


A skater moving on a frictionless ice at 8.0 m/s hits a 5.0-m-wide patch of rough ice. She slows steadly, the continues at 6.0 m/s. What is her acceleration on the rough Ice

Homework Equations


v2 = vo 2 + 2a (d-do)

The Attempt at a Solution


I have tried to set up the formula but I'm not sure how to do it properly.

a = vo 2 + 2v2 (d-do)
Your algebra in transposing the Equation in 2.) to the Equation in 3 is a little dodgy.

You can't just switch the positions of a and v2 like you show. :frown:
 
andrewkirk said:
v and v0 are the final and initial velocities.
d and d0 are the distances from the skater's starting point to the end and beginning of the rough ice

I understand that, I just have problems with setting up the formula.
 
Ashkon said:
I understand that, I just have problems with setting up the formula.
Well, we can't do your algebra for you. You'll have to take the Equation in Section 2 and solve for a using standard algebraic rules.
 
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Ashkon said:
I'm not very good at transposing. I think that moving the v2 will make it a fraction an it would be on the bottom? Or will it just stay the same but v2 goes in another place?
Do you or do you not understand algebra?

You've already tried switching a and v2, and we told you that wasn't correct.
 

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