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Fav十万个为什么
为什么重力让物体下落？
1、重力是地球对物体的吸引力，这种力使得物体总是朝向地球的中心移动，因此物体下落。
2、重力的大小与物体的质量成正比，质量越大，受到的重力越大，下落时速度也会更快。
3、在真空中，所有物体无论轻重都会以相同的速度下落，因为它们只受到重力的作用，没有空气阻力。
4、重力是由于地球的质量产生的，根据牛顿的万有引力定律，任何两个物体之间都有相互吸引的力，地球对物体的吸引力就是重力。
5、重力不仅影响物体下落，还决定了行星的轨道和天体的运动，是宇宙中普遍存在的力。
总之，重力是地球对物体的吸引力，它使得物体总是朝向地球的中心移动，是物体下落的原因，也是宇宙中许多现象的基础。
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