a car accelerates on a horizontal road due to the force exerted by :

(a) engine of car (b) driver of car (c) earth (D)
road

Question

a car accelerates on a horizontal road due to the force exerted by :

   (a) engine of car (b) driver of car (c) earth (D)    
road

anonymous · Answer

road

anonymous · Answer

how?

anonymous · Answer

Have you framed the question correctly?

anonymous · Answer

road its a frictional force

anonymous · Answer

There can be multiple answers for this question

anonymous · Answer

its due to combination of force exerted by engine of the car and reaction force exerted by road...

anonymous · Answer

engine exerts force on the road not on the car..

anonymous · Answer

so u mean to say that reaction force wont count ?? but it should count ....

anonymous · Answer

Reaction force exerted by what? yes..car is accelerating or moving by the reaction force exerted by the road on the car only..

anonymous · Answer

basically its the engine that does all the work even though indirectly..the engine transmits power to the wheels through the drive line...now its the wheels that exerts force on the road and reaction force acts on the wheel and since the wheel is connected to the car, the whole system moves...

anonymous · Answer

suppose engine is exerting force on the car...engine is also a part of the car...then by newton's 3rd law..car(excluding engine)  will also exert force on the engine..just take an analogy|dw:1347165086979:dw|