Does gravity have a constant velocity?
Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth (see figure 1).
Is gravity the same all the time?
Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet’s rotation.
Where is gravity strongest?
Lots of places state that the Earth’s gravity is stronger at the poles than the equator for two reasons:
- The centrifugal force cancels out the gravity minimally, more so at the equator than at the poles.
- The poles are closer to the center due to the equatorial bulge, and thus have a stronger gravitational field.
Is velocity dependent on gravity?
Gravity is applied to every single thing on Earth and changes from place to place, depending on the distance of a body to the center of the Earth. If a body is free falling, its only acceleration is g , gravity. So gravity increases velocity.
Why does gravity slow down the passage of time?
For the free-falling object, according to Special Relativity, time at B must pass relatively slower than it would pass at A, because the object’s velocity is faster at B. What is time? What time is the correct time then? Well, none of them. Einstein postulated that there is no absolute time.
What is the most accurate acceleration of gravity?
The numerical value for the acceleration of gravity is most accurately known as 9.8 m/s/s. There are slight variations in this numerical value (to the second decimal place) that are dependent primarily upon on altitude.
What is the gravity equation for falling objects?
The general gravity equation for velocity with respect to time is: v = gt + v i. (See Derivation of Velocity-Time Gravity Equations for details of the derivation.) Since the initial velocity v i = 0 for an object that is simply falling, the equation reduces to:
Why does the force of gravity accelerate objects?
Emulating a slope, the curvature of space-time accelerates objects that move downward, although the rate of this acceleration isn’t the same at all points. The force of gravity is stronger towards the surface of Earth, where the curvature is more intense than it is on its fringes.