A 1620-kg car travels 2.6 km up an incline at constant velocity. The incline has

Question

A 1620-kg car travels 2.6 km up an incline at constant velocity. The incline has an angle of 4° with respect to the horizontal. What is the change in the car's potential energy?

_____________
the answer i get is 2876 J but its completely wrong.. thank you for your help
A 1620-kg car travels 2.6 km up an incline at constant velocity. The incline has an angle of 4° with respect to the horizontal. What is the change in the car's potential energy?

_____________
the answer i get is 2876 J but its completely wrong.. thank you for your help

Explanation / Answer

PE at the bottom of incline= 0 J The height of car wrt gorund at the end of 2.6 km incline, H = 2.6 Sin4=0.181 km= 181.366 m approx PE at the top : mgh = 1620(9.81)(181.366)=2882317.9 J Change in Potential energy= 2882317.9 - 0 = 2882.3 KJ approx

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