3. Since you only have complete data table information starting at time t = 0.2 seconds, use that as your initial time. Enter data in each of the three sections: parameters - Enter the man's mass (displayed on the first frame of the video) initial values - Enter those that apply to this x-direction motion: t, x, and vx. force functions - Enter a function formula for kinetic frictional force in the x direction. (Hint: Use 9.81 for the acceleration of gravity in your formula.) 4. Finally, add a parameter in the Parameters section for the coefficient of kinetic friction. Use mk since you can't enter in the parameter field. Surfaces Coefficients of Kinetic Friction wood on wood 0.200 steel on steel 0.600 plastic on snow 0.100 glass on glass 0.400 5. Here's a table of some common coefficients of kinetic friction. You can use them for guidance as you begin to zero in on the coefficient of kinetic friction for this plastic disk sliding on ice. Take a first guess at the value of mk and run the video. See how closely the yellow modeled position matches the man's observed position (green marker.) Modify the value of mk, trying to get as close as you can to matching the man's observed position for the entire slide. Part A Once you're satisfied with your model, record your model values in the table below