Direct proportional means as one value increases the other value increases as well. For example, if add mass into a plastic bag the bag will expand/stretch therefore if mass increase the streching will increase as well. Hope you find it helpful!
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Direct proportional describes a relationship between two variables where an increase in one variable leads to a proportional increase in the other variable. This relationship is typically represented by a straight line when graphed.
In a closed system the pressure and temperature are direct proportional.
Evidence given in personal, oral form.
As temperature increases, the volume of a gas also increases if pressure is held constant, according to Charles's Law. This shows that there is a direct proportional relationship between the volume of a gas and its temperature.
Newton's Law of Universal Gravitation states that two bodies in the universe attract each other with a direct proportional force and inversely proportional to the square distance between them.
No, an object's potential energy is not directly proportional to its mass. The potential energy of an object is determined by its height above the reference point and its mass does not play a direct role in this calculation.