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In mechanics, an impact is when two bodies collide. During this collision, both bodies decelerate. During this collision, both bodies decelerate. The deceleration causes a high force or shock , applied over a short time period.
In mechanics and physics, shock is a sudden acceleration caused, for example, by impact, drop, kick, earthquake, or explosion. Shock is a transient physical excitation. Shock describes matter subject to extreme rates of force with respect to time. Shock is a vector that has units of an acceleration (rate of change of velocity).
Impact may refer to: Impact (mechanics), a large force or mechanical shock over a short period of time; Impact, Texas, a town in Taylor County, Texas, US;
Mechanics (from Ancient Greek μηχανική (mēkhanikḗ) ' of machines ') [1] [2] is the area of physics concerned with the relationships between force, matter, and motion among physical objects. [3]
In particular, hypervelocity is velocity so high that the strength of materials upon impact is very small compared to inertial stresses. [3] Thus, metals and fluids behave alike under hypervelocity impact. An impact under extreme hypervelocity results in vaporization of the impactor and target. For structural metals, hypervelocity is generally ...
The COR is a property of a pair of objects in a collision, not a single object. If a given object collides with two different objects, each collision has its own COR. When a single object is described as having a given coefficient of restitution, as if it were an intrinsic property without reference to a second object, some assumptions have been made – for example that the collision is with ...
Contact mechanics is the study of the deformation of solids that touch each other at one or more points. [1] [2] A central distinction in contact mechanics is between stresses acting perpendicular to the contacting bodies' surfaces (known as normal stress) and frictional stresses acting tangentially between the surfaces (shear stress).
In the context of impact mechanics it describes ejection of material from a target during impact by a projectile. In planetary physics , spallation describes meteoritic impacts on a planetary surface and the effects of stellar winds and cosmic rays on planetary atmospheres and surfaces .