"1 N" refers to a unit of measurement in physics known as a Newton, which quantifies force. It is defined as the amount of force required to accelerate a one-kilogram mass by one meter per second squared. This unit is named after the famous scientist Isaac Newton, who formulated the laws of motion and universal gravitation. In practical terms, 1 N is a relatively small force. For example, it is approximately the force exerted by a small apple due to Earth's gravity. Understanding this unit is essential in fields like engineering, mechanics, and physics, where precise measurements of force are crucial for calculations and designs.