Circular Motion Problem: Solving for Revolutions with Constant Acceleration

AI Thread Summary
The discussion centers on a physics problem involving a car's wheels stopping after one revolution due to braking. The key question is how many revolutions the wheels make before stopping if the initial speed is doubled, with a focus on the relationship between linear and angular speeds. Participants express confusion about which equations to use and clarify that the initial speed refers to the linear speed of the car. The problem involves constant acceleration, linking initial and final speeds to the number of revolutions. Understanding these relationships is crucial for solving the problem effectively.
mjolnir80
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Homework Statement


if you step on your car's breaks hard, the wheels stop turning after 1.0 revolution. At the same constant acceleration , how many revolutions do the wheels make before stopping if you initial speed is twice as high?

Homework Equations


The Attempt at a Solution


im having trouble deciding which equations i should use...

and also is the initial speed(referred to in the problem statement) the angular speed or the tangential speed?
thanks in advance
 
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Hi mjolnir80,

mjolnir80 said:

Homework Statement


if you step on your car's breaks hard, the wheels stop turning after 1.0 revolution. At the same constant acceleration , how many revolutions do the wheels make before stopping if you initial speed is twice as high?


Homework Equations





The Attempt at a Solution


im having trouble deciding which equations i should use...

and also is the initial speed(referred to in the problem statement) the angular speed or the tangential speed?
thanks in advance

I believe they are referring the the linear speed of the car (which is closely related to the angular speed of the wheels' rotation).

For the equations, in the problem they mention constant acceleration and initial and final speeds, and revolutions. How can those quantities be related?
 

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