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Mechanical Princeples

can someone please help me with these questions, ill really appreciate it

A vehicle of mass 750kg accelerates up an incline of 1 in 10 (sine) increasing its speed from 20kmh-1 to 60 kmh-1 in a time of 8.5 seconds; if the frictional resistance to motion is 0.5kN. Making use of D' Alembert's principles;
Determine:

[1]the tractive effort between the driving wheels and the road surface,
[2]the work done during the period of acceleration and
[3]the average power developed
[4]use energy method to confirm your answer in [1]

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