okgo said:I haven't been able to get the answer marked by the computer.
I tried Fs(h*cos15)=.5mv^2-mgh
and that is way off the anwser
Friction is a force that opposes motion between two surfaces that are in contact with each other. It is caused by the irregularities and roughness of the surfaces and results in the conversion of kinetic energy into heat.
Friction causes a loss of energy by converting some of the kinetic energy of a moving object into heat. This results in a decrease in the overall energy of the system.
The amount of energy lost due to friction depends on the surface roughness, the force applied, and the speed of the moving object. It also varies depending on the type of material and the presence of lubricants.
The loss of energy due to friction can be calculated using the formula W = Fd, where W is the work done, F is the force of friction, and d is the distance over which the force is applied. This formula can be used to calculate the amount of energy converted into heat due to friction.
The effects of friction can be reduced by using lubricants, such as oil or grease, to create a barrier between the moving surfaces. Additionally, using smoother surfaces and reducing the force and speed of the moving object can also help to minimize energy loss due to friction.