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Related Concept Videos

Projectile Motion01:20

Projectile Motion

An object thrown in the air follows a parabolic path under the influence of Earth's gravitational force. The motion of such an object is called projectile motion, and the object itself a projectile. The parabolic path followed by the projectile is called the trajectory. Some common examples of projectile motion are the launching of fireworks, a golf ball in the air, meteors entering the Earth's atmosphere, and the firing of bullets.
When an object falls under gravity and has no horizontal...
Projectile Motion: Equations01:26

Projectile Motion: Equations

Projectile motion is commonly observed in our day-to-day life. For example, a basketball thrown by a player, an arrow shot from a bow, and kids jumping into the pool, all undergo projectile motion.
Any projectile motion problem can be solved by using the following strategy:
Projectile Motion: Example01:18

Projectile Motion: Example

The theory of projectile motion is very useful for players of several sports to improve their performance. For example, a javelin thrower needs to throw their javelin in such a way that it travels as far as possible. The javelin thrower takes a short run-up to increase the initial speed of the javelin. The range of a projectile is at its maximum at a 45° angle so javelin throwers try to angle their throw as close to 45° as possible.
When we speak of the range (R) of a projectile on level...
Elastic Potential Energy01:01

Elastic Potential Energy

Elastic potential energy is the energy stored as a result of the deformation of an elastic object, such as the stretching of a spring. An object is elastic if it returns to its original shape and size after being deformed. 
Potential energy is also associated with the elastic force exerted by an ideal spring. The work done by this force can be represented as a change in the elastic potential energy of the spring. Thus, the work done by a perfectly elastic spring, in one dimension, depends only...
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...

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Related Experiment Video

Updated: May 7, 2026

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
12:34

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence

Published on: June 24, 2016

Throwing of slender elastic projectiles.

Guillaume Giombini1, Franck Celestini1, Christophe Raufaste1,2

  • 1Institut de Physique de Nice, CNRS, Université Côte d'Azur, 06200 Nice, France.

Physical Review. E
|February 20, 2025
PubMed
Summary

Weighted elastic projectiles can achieve superpropulsion, significantly increasing kinetic energy. This effect is maximized by optimizing the projectile

Area of Science:

  • Physics
  • Mechanical Engineering
  • Materials Science

Background:

  • Slender elastic projectiles are common in sports and robotics.
  • Understanding their dynamics is crucial for performance optimization.
  • Existing models often overlook the impact of mass distribution.

Purpose of the Study:

  • To investigate the throw dynamics of slender elastic projectiles.
  • To analyze the influence of projectile properties and thrower parameters.
  • To explore the 'superpropulsion' effect in weighted projectiles.

Main Methods:

  • Integration of experimental data, numerical simulations, and theoretical analyses.
  • Consideration of projectile geometry, mechanical properties, and mass distribution.
  • Analysis of acceleration and ejection dynamics under various conditions.

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Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment

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Last Updated: May 7, 2026

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Published on: June 24, 2016

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Main Results:

  • Weighted projectiles exhibit significant lateral deformations, enhancing dynamics.
  • A 'superpropulsion' effect increases kinetic energy compared to rigid objects.
  • Maximum energy increase (160%) observed for specific mass ratios and dimensionless factors.

Conclusions:

  • Projectile mass distribution critically influences elastic energy transfer.
  • The study reveals a mechanism for enhanced kinetic energy in slender structures.
  • Findings have potential applications in sports technology and robotic design.