Question

. A car whose brakes are locked skids to a stop 70 m from an initial velocity of 80 km/h. Find the coefficient of kinetic friction

Answer 1

Answer:

In order to find Fn, in order to be able to solve for μ, I need to know the mass of the car... I have no idea where to even begin solving for the mass of the car using the currently known values :( If anyone has time, please point me in the right direction.

Source https://www.physicsforums.com/threads/dynamics-question-finding-mass-using-vi-vf-d-and-acceleration.622586/

Explanation:

Vi: 22.22m/s Vf: 0m/s d: 70m a(deceleration): -3.526m/s^2 g= 9.81m/s^2 μ=?

Source https://www.physicsforums.com/threads/dynamics-question-finding-mass-using-vi-vf-d-and-acceleration.622586/