Q1) 1 A machine whose price is 50,000 dollars, its useful life is 5 years, the number of working hours per year is 2000 hours, the investment ratio is 15%. The cost of depreciation and replacement and the investment cost for each six years of operation, if you know that the rate of increase in prices for the construction machinery is 8% annually. Use the add-on method for years to calculate depreciation. 2- Show the effect of road traction coefficient on the traction used of the machines and when the driving wheels can slip