Elastic & Inelastic Collisions | Collision in 1D & 2D | Physics - GMS - Learning Simply
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Elastic & Inelastic Collisions | Collision in 1D & 2D | Physics

The line along which the internal forces act during collision is known as the line of collision. Franck Hertz experiment explains about the elastic an
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We often hear in the news that two vehicles collided causing injuries to people. These collisions prove to be dangerous depending on the force they collide with each other. Let us try to find out how we can define collision? So to get started collision is a situation in which interacting bodies experience large forces for a short interval of time. The line along which the internal forces act during collision is known as the line of collision. Franck Hertz experiment explains about the elastic and inelastic collision.


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Types of Collision

Depending upon the velocity of the body with respect to the line of the collision, the collisions are classified into two types: Head-on Collision and Oblique Collision.

Head-on Collision

This type of collision happens when the velocities of both the particles are along the line of collision. This can be regarded as a collision in one dimension. A head-on collision is shown in the figure.


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Oblique Collision

Oblique collision takes place when one of the two bodies has a velocity at an angle with the line of collision. In the case of an oblique collision, the component of velocity perpendicular to the line of the collision remains unchanged. This can be regarded as a collision in two dimensions.

Elastic and Inelastic Collision

Apart from the above two classification collisions can also be classified on the basis of whether kinetic energy remains constant or not. If the kinetic energy of the system remains constant, then it is known as an elastic collision. While there are situations when some kinetic energy gets converted into heat, deformation of shape etc. These types of collisions are known as inelastic collisions.

Coefficient of Restitution

We often define another quantity known coefficient of restitution (e). It is defined as the ratio of the velocity of separation by the velocity of approach along the line of collision. So here,

=2112

e=v2v1u1u2

Depending on the values of e we can infer the type of collision.

 

For e = 1, elastic collision

0 < e < 1, inelastic collision

e = 0, perfectly inelastic collision

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At the helm of GMS Learning is Principal Balkishan Agrawal, a dedicated and experienced educationist. Under his able guidance, our school has flourished academically and has achieved remarkable milestones in various fields. Principal Agrawal’s visio…

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