7. We can tell if an object is in motion if A. the object will look different C. we are able to see the forces B. the object will remain in the same position D. the position of the object changes relative to other objects 8. If the net force acting on an object is zero, which of the following is always true about the object? A. The object is at rest. C. No force acts on the object. B. The object is not accelerating. D. The object is moving at constant velocity 9. Ayessa, Joshua and lan played tug-of-war. If Ayessa exerted 200 N of force all by herself and the two boys together exerted a combined force of 100 N in the opposite direction of Ayessa, will the rope move? In what direction will the rope move? A. Yes, the rope will move in the direction where Ayessa is exerting since she exerted more force. B. No, the rope will not move anywhere since the forces applied are balanced. C. Yes, the rope will move in the direction of the two boys since they are stronger. D. No, the rope will not move since they all applied the same force.​