| Physics - Friction?
A horizontal force of 1.7 N accelerates a 3.8 kg mass, from rest, at a rate of 0.70 m/s^2 in the positive direction. What friction force acts on the mass?
A person on a scale rides in an elevator. If the mass of the person is 30.7 kg and the elevator accelerate upward with an acceleration of 9.92 m/s^2, what is the reading of the scale?
During the investigation of a traffic accident, police find skid marks 57.0 m long. They determine the coefficient of friction between the car's tires and the roadway to be 0.824 for the prevailing conditions. Estimate the speed of the car when the brakes were applied in m/s.
Help!? I am so lost! Thanks!
| 
02-26-2008, 11:04 PM
Similar Threads 
Linear Mode
