0
Explain why free fall acceleration near earths surface is constant?
Wiki User
∙ 13y ago
Since the radius of Earth is far greater(rough: 6400km) than a few 100m, you can neglect that distance and still have g=9.80 (g=GM/(R^2), with R being the radius of earth, a few 100m dont do much difference in g's equation)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agovery simple. gravity is acting upon these objects the very same. no extra or no less gravity is being exerted upon the objects. the only reason they fall differently on earth is because of air resistance. the air pushes them backwards.
Wiki User
∙ 14y agoIn fact, it is not exactly the same because in a vacuum, there is no air to create friction that decreases acceleration so the rate of acceleration tends to be greater than in a non-vaccum environment.
Wiki User
∙ 13y agoThe free fall acceleration of the earth is approximately related to the distance from the surface by the following formula.
g = GM/(R2 + h)
where G = universal gravitational constant, M = Mass of Earth, R = Radius of Earth, h = distance from the surface of the earth
g = 3.98 * 1014 / ( (6.0 * 106 )2+ h)
as h increases to a very low value near the surface of the earth the value of g can be approximately taken to be constant near the surface of the earth.
Wiki User
∙ 14y agoAir resistance.
Wiki User
∙ 12y agobecause u are entering the atmosphere
Add your answer:
Earn +20 pts
How would the acceleration of gravity near earths surface change?
In general, when near the Earth's surface, scientists use 9.8 meters per seond^2 since the slight difference in elevation along the Earth's surface doesn't affect the acceleration very much. But if you want the exact formula it is: (G(msub1)(msub2))/radius^2. msub1 and msub2 are the masses of the two objects, and G is 6.67x10^(-11), the gravitational constant.
Most minerals on earths surface contain which of the following?
silicon & oxygen.
What percent of the earths surface does the Atlantic ocean?
i believe roughly 70% (not completely sure though) I'm not really sure, but something like 70% of the earths surface..
What process did James Hutton propose replenishes the rock on Earths surface?
Uplift
What is the name of that show with the scientists that find lizards in the earths mantle and a boy on the surface finds one and tries to raise it with his friend in his dogs doghouse?
surface
What occurs when objects free fall near the Earths surface constant acceleration?
Yes, exactly. Free fall results in constant acceleration.
What occurs when the objects free falls near earths surfaces?
Constant acceleration
What is the gravitational force on any object near the earths surface?
Force (newtons) = mass (kg) * acceleration (m/s/s) > Acceleration at earths surface radius = 9.82 m/s/s
What is The constant recycling of water from the earths surface?
the water cycle
Is earths surface in constant motion?
Yes, relative to any observer not attached to the earth's surface.
What is makemakes gravity compared to earths gravity?
The acceleration of gravity at its surface is currently estimated as 0.4 m/s2 .That's about 4% of the acceleration of gravity on the Earth's surface.
What is the constant movement of water between the atmosphere and earths surface called?
water cycle
Why does an object accelerate when it falls towards the earths surface?
The force of gravity pulls it down to the earth.
Explain why the gravitational acceleration of any object near the Earth is the same no matter what the mass of the object is?
Strictly speaking its not the same . This equation calculates the acceleration: acceleration = ( G * ( m1 + m2 ) ) / d2 where: G = newtons gravity constant m1 = earths mass (kg) m2 = objects mass (kg) d = distance between centres of gravity (metres) The earths mass is so large however, only a significantly large object mass would make a real difference to the acceleration.
Why is the acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on earths surface?
Because the acceleration of gravity on the surface of any given body depends on the mass of the body and its radius ... the distance of the surface from the center. Mars' mass ... about 11% of Earth's ... and Mars' radius ... about 53% of Earth's ... combine to produce about 38% of Earth's gravitational acceleration at the surface of Mars.
When you push UP on an object when object is stationary on earths surface you increase your weight when you push DOWN on an object when object is stationary on earths surface you decrease your weight?
No, your weight is just the acceleration due to the Earth's gravity,
What effect would thick cloud cover have on the temperature of earths surface Explain.?
Help me!
