The car that weighs 2000 tonnes has more mass than the person, and this increased mass has an opposite effect on the car's acceleration. However, it is crucial to note that acceleration depends on both force and mass. If you apply Newton's second law, the car - which is heavier - would reach the ground first since it experiences more force of gravity, and the amount of gravity is equivalent to the amount of acceleration. According to physics, all kinds of matter, regardless of its size or mass, fall with the same acceleration rate if they are solely influenced by gravity - for example, free falling a car that weighs two thousand tons and a person weighing 75kg. But despite their differences, they are intercorrelated because free-fall motion affects air resistance in specific ways.īy definition, free-fall motion is when someone or something succumbs to gravity and gravity alone - when they fall without any force affecting their speed. But given how physics aims to study how everything works, it is no surprise that it also has given birth to concepts related to gravity, namely free-fall motion and air resistance.įree-fall motion and air resistance are two separate concepts used to explain how people and objects react to gravity. It is also what keeps the planets in orbit, so we don't float freely into space. A Quick Lesson In Understanding Free Fall And Air ResistanceĮveryone knows what gravity is - it is the force that pulls people, objects, and anything and everything back to Earth.
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