Rock samples and Indirect evidence from seismic waves.:)
Because of gravity.
3.7 m/s2 or 0.38 g
At the surface the force on both the earth and the object is given by: force (newtons) = mass (kg) * acceleration due to gravity (m/s)/s > another way to look at it is , every kg mass has 9.8 newtons of force acting on it.
(simplified) Gravitational force of attraction is balanced by centripital force due to earths velocity. (G*m1*m2) / r2 = m2 * (v2 / r) m1 = sun mass m2 = earth mass r = earth - sun distance v = earths orbital velocity G = newtons gravitational constant
Because it is a force. Gravity is one of the four fundamental forces (gravity, electromagnetism, weak nuclear, strong nuclear or color force).Gravity causes mass to accelerate. F = ma. Gravity must therefore be a force.
The moon's gravity is about 1/6th of the earth's.
Gravity.
Gravity is strongest at the earths surface because it's atmosphere is v dense and so the force inc.this happens because force is directly proportional to density.
9.8 newtons, down
The force responsible for keeping you on Earth's surface is the gravitational force. This force is generated by the mass of the Earth, which pulls objects towards its center.
Gravity.
earth is 81.3 times the mass of the moon . acceleration due to gravity at earths surface = 9.82 (m/s)/s acceleration due to gravity at moons surface = 1.62 (m/s)/s . 1 kg at earths surface, force = 1 * 9.82 = 9.82 newtons 1 kg at moons surface, force = 1 * 1.62 = 1.62 newtons
The Sun's gravity, at its surface, is about 28 times Earth's surface gravity.
Earths gravity acts on everything from its center of gravity to everything else's center of gravity.
the force on say, a 1 kg mass anywhere on earths surface, is approximately 9.8 newtons, the reaction force on the earth is the same
On the earths surface gravity pulls you down.
Gravity is the force of nature that pulls in Earth's water, keeping it on the surface of the planet. This gravitational force is responsible for the tides and the shape of the ocean basins.