A 1.60-kg object is held 1.30 m above a relaxed, massless vertical spring with a force constant of 340 N/m. The object is dropped onto the spring. (a) How far does the object compress the spring? (b) Repeat part (a), but this time assume a constant air-resistance force of 0.800 N acts on the object during its motion. (c) How far does the object compress the spring if the same experiment is performed on the Moon, where g = 1.63 m/s and air resistance is neglected? Need Help? Read It

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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.