A vehicle is travelling towards the east on a horizontal road. Neglect any forces exerted by the air. The frictional force exerted by the road on the vehicle

Step-by-step solution

Since air resistance is neglected, the only external horizontal force acting on the vehicle is the frictional force exerted by the road. According to Newton's second law, the net horizontal force is given by F = ma . If the vehicle is accelerating, its speed is increasing in the direction of motion (east). The acceleration is towards the east, so the net force, which is the frictional force, must be towards the east. If the vehicle moves with a uniform velocity, its acceleration is zero ( a = 0 ). Therefore, the ne