Resolving vectors problem (I guess)

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AI Thread Summary
The discussion centers around a physics homework problem involving vectors and forces related to a car's motion. Initially, the participant believed the correct answer was D due to the backward force exerted by the wheels on the road. However, they were confused when the answer was revealed to be B, prompting them to reconsider the situation. They acknowledged that if the car were stationary, the answer would differ, highlighting the importance of the normal contact force in understanding the problem. The conversation concludes with the participant expressing gratitude for the clarification.
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Homework Statement


http://i1269.photobucket.com/albums/jj597/bubakazouba/prob_zps06224e98.png


Homework Equations





The Attempt at a Solution


I thought it would be D because the wheels exert a backward force on the road and the reaction of the road if forward, but I got confused when I knew that the answer was B, I mean its not like turning or anything why is it B?
 
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If the car was not accelerating, just sitting there, what would be your answer? Does that help?
 
it would be.. yea I got it ,I totally forgot about the normal contact force.
Thank you very much :)
 

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