The word "gravity" refers to the force that pulls an object to another object. More specifically, it is the force that the Earth or another heavenly body exerts on people or objects, pulling them toward it.Continue Reading
All planets have gravity, but some have more than others. After the sun, Jupiter has the strongest force of gravity in the solar system because it has the largest mass of all the planets. Gravity keeps people and things grounded on the surface of the Earth instead of floating through the air.
The word's origin comes from the Latin stem word "gravitas," which means heaviness. Another use of the word "gravity" means seriousness, as in the sentence, "He tried to explain the gravity of the situation to those who thought the prank was funny."Learn more about Motion & Mechanics
Terminal velocity is the maximum velocity an object reaches when it is falling under the force of gravity or another constant driving force. The object is subject to a resistance that increases as the velocity increases, and when the resistance equals the driving force, terminal velocity occurs.Full Answer >
The force of gravity between two objects is determined by the mass of each object and the distance between their centers. Objects with a greater amount of mass will exert a greater degree of gravitational pull, but as the distance between two objects increases, the gravitational force between them lessens. The significance of distance with regard to large masses, such as planets, plays an important role in the science of Astronomy.Full Answer >
Acceleration due to gravity is generally considered to be negative because the force of gravity pulls in the downward direction. The frame of reference from Earth's surface most often used in physics has the sky in the upward direction and the ground in the downward direction.Full Answer >
Objects fall at the same velocity regardless of their weight, if gravity is the only force acting upon them. In a vacuum, where air resistance has been eliminated, a bowling ball and a feather fall at the same speed.Full Answer >