Final answer:
If forces A and B are acting on an object to the left and right, respectively, and force B is greater than force A, the object will move to the right due to the resultant net external force. The magnitude of the forces determines this motion, not the masses of the forces. The correct option is (b).
Step-by-step explanation:
Only two forces are acting on an object, with one force applied to the left and another to the right. In physics, the motion of an object is determined by the net external force acting on it. When understanding how forces affect the motion of an object, it's crucial to consider both the magnitude and direction of these forces.
If force A is applied to the left force B is applied to the right, and force B is greater than force A, the net force will be directed to the right. This is due to the vector nature of forces where they can be added together to find the net force. The object will then accelerate in the direction of the net force, which is determined by subtracting the smaller force from the larger one.
Given that the object is at rest initially, it will only start moving if there is a resultant or net external force acting upon it. Since force B is greater than force A, the resultant force will be in the direction where the greater force is applied. Hence, the object will move to the right, which is in the direction of the greater force. The mass of the object does not affect the direction of its motion in this context, only the acceleration. Therefore, the correct answer would be (b) Right. Remember that this explanation assumes no other forces, such as friction or air resistance, are at play.