The discussion revolves around a physics problem involving an automobile that slides to a stop, with a focus on the role of mass in the context of kinematic equations and friction. The problem presents a scenario where the mass of the car is not provided, raising questions about its necessity for solving the problem.
The discussion is active, with participants providing insights and questioning the relevance of mass. Some guidance has been offered regarding the use of kinematic equations and the introduction of mass as a parameter to assess its influence on the final result.
There is an ongoing debate about the implications of mass in the problem, with some participants suggesting that it may be irrelevant based on dimensional analysis. The lack of explicit consensus indicates that multiple interpretations are being considered.
You don't need the mass. Go ahead and solve the equations to find the acceleration.Arwing said:Homework Statement:: An automobile's wheels are locked as it slides to a stop from 34.9 m/s. If the coefficient of kinetic friction is 0.266 and the road is horizontal, how long does it take the car to stop?
Relevant Equations:: F=ma, Fg=mg, Fk=coefficient of friction * Fn
I'm not sure where to start, I feel like I'm missing the mass but it is not listed.
You could assume a) it's a toy car with a mass of ##1 kg##; and, b) a real car with a mass of ##1000 kg##; and see what difference that makes.Arwing said:Homework Statement:: An automobile's wheels are locked as it slides to a stop from 34.9 m/s. If the coefficient of kinetic friction is 0.266 and the road is horizontal, how long does it take the car to stop?
Relevant Equations:: F=ma, Fg=mg, Fk=coefficient of friction * Fn
I'm not sure where to start, I feel like I'm missing the mass but it is not listed.