Determine if the following statements are true or false. 4. Inertia is the tendency of an object to resist motion. 5. Newton's first law of motion is also called the law of acceleration. 6. If an object is at rest, inertia will keep it at rest. 7. The inertia of an object is determined by its speed. 8. The speed of an object changes only when it is acted on by an unbalanced force. 9. A stationary object resists movement only because of gravity. 10. The tendency of an object to resist a change in motion depends on its mass. 11. Newton's first law of motion applies only to objects that are already

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.