Potential energy

... mass of the object, g the acceleration due to gravity and h the height above a chosen reference ... gradient of the potential field. For example, gravity is a conservative force . The work done by a ... A with U = a to point B with U = b by gravity is ( b - a ) and the work done going back the ...

Kinetic energy

... towards infinity as its velocity approaches the speed of light, and thus that it is impossible to accelerate an object to this boundary. Where gravity is weak, and objects move at much slower velocities than light (e.g. in everyday phenomena on Earth), Newton's formula is an excellent approximation ...

Origin of life

... understanding of the natural world. Progress in this field is generally slow and sporadic, though it still draws the attention of many due to the gravity of question being investigated. A few facts give insight into the conditions in which life may have emerged, but the mechanisms by which non-life ...

Photon

... zero invariant mass but a definite finite energy. Because they have energy, the theory of general relativity states that they are affected by gravity , and this is confirmed by observation. Creation Photons can be produced in a variety of ways, including emission from electrons as they ...

Vestibular system

... of the rotation signals from the semicircular canals is straightforward, the interpretation of otolith signals is more difficult: since gravity is equivalent to a constant linear acceleration, we somehow have to distinguish otolith signals that are caused by linear movements from such that ...