# Does acceleration affect spacetime?

## Does acceleration affect spacetime?

Acceleration does not curve spacetime, only gravity does. The equivalence principle does not say that gravity and acceleration are the same, it says that if you choose a region of spacetime small enough that tidal effects can be ignored, then gravity and acceleration will behave the same way.

## How does curved spacetime cause acceleration?

The curvature of spacetime (not just space) is responsible for gravity. Literally, near heavy objects, the “future direction” points slightly down. So anything that moves forward in time will find its trajectory pointing down slightly. This takes the form of downward acceleration.

Is acceleration absolute in special relativity?

Special relativity treats accelerating frames differently from inertial frames, but can still deal with accelerating frames. And accelerating objects can be dealt with without even calling upon accelerating frames. Velocities are relative but acceleration is treated as absolute.

What does General Relativity say about acceleration?

In relativity theory, proper acceleration is the physical acceleration (i.e., measurable acceleration as by an accelerometer) experienced by an object. It is thus acceleration relative to a free-fall, or inertial, observer who is momentarily at rest relative to the object being measured.

### Does acceleration slow down time?

A clock that has accelerated ticks more slowly than a clock which has not accelerated so there is time dilation at a higher velocity. So during the acceleration, the clock will start getting slower and slower.

### Does time change with speed or acceleration?

So this says that an accelerating clock will count out its time in such a way that at any one moment, its timing has slowed by a factor (γ ) that depends only on its current speed; its acceleration has no effect at all.

Why gravity is spacetime curvature?

Gravity is the curvature of spacetime Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel. That curvature is dynamical, moving as those objects move. In Einstein’s view of the world, gravity is the curvature of spacetime caused by massive objects.

Is acceleration a relative quantity?

5 Answers. In standard Newtonian mechanics, acceleration is indeed considered to be an absolute quantity, in that it is not determined relative to any inertial frame of reference (constant velocity).

#### Is acceleration also relative?

The magnitude and direction measured will measure in depend on the frame of the observer, which is often what is meant when people say “it’s relative”. The very simple answer to your question is that yes, acceleration is relative.

#### Why do we accelerate upwards?

The 9.8 m/s² we feel is caused by the Earth accelerating upward like a rocket! I am not at rest. The relativistic point of view would be that the space around the Earth is compressing, but the atoms of the Earth resists this compression. This means that the surface of the Earth is constantly accelerating upwards.