8. A boy and the girl pull the grocery cart at the same time in opposite di 12N of force respectively, what will be the net force on the object? To move? A. 27 N to the direction of the boy's force B. 27 N to the direction of the girl's force C. 3 N to the direction of the boy's force D. 3 N to the direction of the girl's force 9. What force acts perpendicular to the surface of the object in contact wi A. Applied C. Gravitational B. Normal D. Tension 10. If you were given a chance to travel to the Earth's moon, what happen A. increases C. decreases B. stays the same D. no changes at all 11. Newton's second law of motion states that an object's acceleration A. increases as its mass decreases and as the force acting on it incre B. decreases as its mass decreases and as the force acting on it incre C. increases as its mass increases and as the force acting on it incre D. decreases as its mass increases and as the force acting on it incre​