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solve the following step by step:

Q1) Calculate the traction torque required at the wheels and the corresponding rotational speed of the wheels in revolution per minute (rpm) for a vehicle with the following data (4 marks): a. $mass(m)=1200kg$ b. Frontal area $(A_{f})=2.2m_{2}$ c. Coefficient of drag $(C_{d})=0.2$ d. Vehicle speed $(V)=100km/h$ e. Wheel size $=195/65/15$ f. Coefficient of rolling $(C_{r})=0.012$ g. Density of air $(?)=1.2kg/m_{3}$ h. Acceleration of gravity $(g)=9.8m/s_{2}$