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mtasquared
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When an apple falls to the ground does it not exert some gravity of it's own on the Earth and thus shortening the distance it falls? Why is it always assumed the Earth does not itself move in physics problems?
Sure.mtasquared said:When an apple falls to the ground does it not exert some gravity of it's own on the Earth and thus shortening the distance it falls?
Estimate the Earth's acceleration due to the apple's gravitational pull. Then you'll see why it's ignored.Why is it always assumed the Earth does not itself move in physics problems?
mtasquared said:When an apple falls to the ground does it not exert some gravity of it's own on the Earth and thus shortening the distance it falls? Why is it always assumed the Earth does not itself move in physics problems?
Apples, like any other object, fall to the ground due to the force of gravity. This force is constantly pulling objects towards the center of the Earth.
Yes, the mass of the apple does affect how fast it falls. According to Newton's second law of motion, the greater the mass of an object, the greater the force needed to accelerate it. Therefore, a heavier apple will fall faster than a lighter one.
The speed at which an apple falls is affected by several factors, such as air resistance, wind, and the angle at which it falls. For example, if an apple falls from a higher height, it will reach a greater speed due to the force of gravity acting on it.
No, an apple cannot float instead of falling to the ground. This is because the force of gravity is still acting on the apple, pulling it towards the Earth's surface. The only way an apple can float is if it is in a liquid less dense than itself, such as water.
If an apple fell on a planet with no gravity, it would continue to float in whatever direction it was initially moving. Without the force of gravity, there would be no pull towards the center of the planet, causing objects to float rather than fall to the ground.