Acceleration what is g

Observe that the velocity-time data above reveal that the object's velocity is changing by 9. That is, the free-falling object has an acceleration of approximately 9.

Another way to represent this acceleration of 9. The velocity of the ball is seen to increase as depicted in the diagram at the right.

NOTE: The diagram is not drawn to scale - in two seconds, the object would drop considerably further than the distance from shoulder to toes. Physics Tutorial.

My Cart Subscription Selection. In Unit 2 of The Physics Classroom , an equation was given for determining the force of gravity F grav with which an object of mass m was attracted to the earth. Now in this unit, a second equation has been introduced for calculating the force of gravity with which an object is attracted to the earth. In the first equation above, g is referred to as the acceleration of gravity. Its value is 9. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.

When discussing the acceleration of gravity, it was mentioned that the value of g is dependent upon location. There are slight variations in the value of g about earth's surface. These variations result from the varying density of the geologic structures below each specific surface location. They also result from the fact that the earth is not truly spherical; the earth's surface is further from its center at the equator than it is at the poles.

This would result in larger g values at the poles. As one proceeds further from earth's surface - say into a location of orbit about the earth - the value of g changes still. To understand why the value of g is so location dependent, we will use the two equations above to derive an equation for the value of g. First, both expressions for the force of gravity are set equal to each other.

Now observe that the mass of the object - m - is present on both sides of the equal sign. Thus, m can be canceled from the equation. This leaves us with an equation for the acceleration of gravity. How to Determine Magnitude of Velocity. How to Calculate the Velocity of an Object Dropped The Physics of a Playground Slide. The Types of Velocity. How to Calculate Crash Forces. How to Calculate Tangential Force. What is Inertia? How to Calculate Angular Acceleration.