Forces Glossary | Young Education

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E

elastic

In its simplest form, Hooke's Law can be expressed as F = kx, where F is the force, k is the spring constant (a measure of stiffness), and x is the displacement or deformation. This equation allows us to calculate the magnitude of the force at different levels of deformation.

Elastic collision

A collision in which both momentum and kinetic energy are conserved.

Elastic deformation

A temporary deformation in which an object returns to its original shape after the force is removed.

Elastic limit

The maximum deformation from which an object can return to its original shape.

electric

the force between two charged objects is described by Coulomb's law, named after the French physicist Charles-Augustin de Coulomb. Mathematically, it can be expressed as F = k\( \frac{q_1q_2}{r^2} \), where F is the force, k is the electrostatic constant, q₁ and q₂ are the magnitudes of the charges, and r is the distance between the charges. This equation allows us to calculate the strength of the force between charged objects.

Electrostatic force

A non-contact force between electrically charged objects.

Equilibrium

Opposing forces are balanced.

Equilibrium position

The position where an object is not displaced from its normal state.

Exhaust

Material expelled from a propulsion system.

Explosion

An interaction in which parts of a system move apart as stored energy is released.

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