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Related Concept Videos

Impulse01:13

Impulse

According to Newton’s second law of motion, the rate of change of the momentum of an object is the net external force acting on it. The total change in momentum between two timepoints thus depends on both the external force acting on it and the time over which it acts. Describing this mathematically, the total change of an object’s motion is proportional to the force vector and the time over which it is applied. This product is called impulse.
Additionally, it can be shown that the total...
Elastic Collisions: Introduction01:00

Elastic Collisions: Introduction

An elastic collision is one that conserves both internal kinetic energy and momentum. Internal kinetic energy is the sum of the kinetic energies of the objects in a system. Truly elastic collisions can only be achieved with subatomic particles, such as electrons striking nuclei. Macroscopic collisions can be very nearly, but not quite, elastic, as some kinetic energy is always converted into other forms of energy such as heat transfer due to friction and sound. An example of a nearly...
Elastic Collisions: Case Study01:15

Elastic Collisions: Case Study

Elastic collision of a system demands conservation of both momentum and kinetic energy. To solve problems involving one-dimensional elastic collisions between two objects, the equations for conservation of momentum and conservation of internal kinetic energy can be used. For the two objects, the sum of momentum before the collision equals the total momentum after the collision. An elastic collision conserves internal kinetic energy, and so the sum of kinetic energies before the collision equals...
Impact01:30

Impact

Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
Types of Impact01:30

Types of Impact

Impacts can be classified in various forms, primarily under two subgroups: central impact and oblique impact. A central impact occurs when two objects collide head-on, possessing opposite velocities aligned along the line of impact. Conversely, an oblique impact occurs when two objects collide at an angle, resulting in a modification of both direction and velocity.
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...
Impact: Problem Solving01:26

Impact: Problem Solving

In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...

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Related Experiment Video

Updated: Jul 6, 2026

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
09:44

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

Chondrules: An Origin by Impacts between Dust Grains.

D E Lange, J W Larimer

    Science (New York, N.Y.)
    |November 30, 1973
    PubMed
    Summary
    This summary is machine-generated.

    Meteorite analysis reveals that high-velocity impacts in the early solar nebula could have formed chondrules. This finding supports theories on early solar system grain dynamics and chondrule formation.

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    Published on: June 5, 2014

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    11:51

    Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

    Published on: February 22, 2018

    Area of Science:

    • * Planetary Science
    • * Cosmochemistry
    • * Astrophysics

    Background:

    • * Chondrules are fundamental components of meteorites, offering insights into the early solar system.
    • * The formation mechanism of chondrules, particularly their required high temperatures and velocities, remains a subject of scientific debate.
    • * Previous theoretical models proposed high-velocity grain collisions as a possible chondrule formation pathway.

    Purpose of the Study:

    • * To investigate the physical conditions and impact velocities during chondrule formation.
    • * To provide observational evidence supporting impact-driven chondrule formation mechanisms.
    • * To test theoretical predictions regarding grain velocities in the protoplanetary nebula.

    Main Methods:

    • * Microscopic examination of a barred chondrule containing a magnetite spherule from the Ngawi meteorite.
    • * Analysis of fracture patterns and partial melting within the chondrule.
    • * Calculation of impact velocities based on observed physical effects.

    Main Results:

    • * A barred chondrule from the Ngawi meteorite contains an embedded magnetite spherule.
    • * Evidence of fracturing and partial melting indicates a high-energy collision event.
    • * Estimated impact velocities range from 10^5 to 10^6 cm/s.

    Conclusions:

    • * The observed features in the Ngawi meteorite chondrule support the hypothesis that high-velocity impacts were responsible for chondrule formation.
    • * This finding validates theoretical predictions by Cameron and Whipple concerning grain velocities in the early solar nebula.
    • * Impact events are confirmed as a viable mechanism for generating chondrules, crucial components of planetary bodies.