To accelerate a car we ignite petrol in the engine of the car. Since only an external force can accelerate the centre of mass, is it proper to say that the force generated by the engine accelerates the car"?"
Answers
Answered by
0
Answer:
no car can't accelerate without external force.car actually accelerate due to external force provided by reaction of earth
Answered by
1
It is not appropriate to say that the force generated by the engine is accelerating the car as the engine is not generating a force along the acceleration.
Explanation:
Technically, it is not appropriate to say that the force generated by the engine is accelerating the car as the engine is not generating a force along the acceleration. Even if it did so, it would have been balanced by the internal reaction force.
Because the movement of the engine's piston makes a rotational motion in the wheels, which in turn is used to push back the road and because of the road's frictional force (external force), the car is accelerating, hence in common language, this statement is made.
Similar questions