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1. The primary cause of changes in motion is force. Force can make objects move, move faster, stop or change their direction of motion. Based on your own understanding. which of the following concepts is CORRECT? a. If an object stays at rest, there is no force acting upon it. b. An object continues to move at constant velocity because a balanced force acts on it. c. If the speed of an object increases, its acceleration also increases. d. Objects move because they have a force; they stop when their force is already used up. 2. Which of the following refers to the size or strength of the force and is expressed in Newton (N)? a. Point of application b. Line of Action c. Magnitude d. Direction 3. What is the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends? a. Normal force b. Tension c. Friction d. Force of gravity 4. If two forces acting on an object are equal in magnitude but opposite in direction, they are considered as forces. a. Balanced b. Unbalanced c. Net d. Combined 5. "An object at rest will stay at rest or an object in motion will stay in motion and travel in straight line, as long as no external net force acts on it" refers to what law of motion? a. Law of inertia b. Law of acceleration c. Law of motion d. Law of action-reaction​

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