What is the definition and calculation for change in kinetic energy?

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SUMMARY

The change in kinetic energy is defined as the difference between the final and initial kinetic energy of an object. The expression for kinetic energy (KE) is given by the formula KE = 0.5 * m * v², where m is the mass and v is the velocity of the object. To change the kinetic energy, either the mass (m) or the velocity (v) must change, with velocity being the primary variable that affects kinetic energy when mass remains constant.

PREREQUISITES
  • Understanding of basic physics concepts, particularly Newtonian mechanics.
  • Familiarity with the formula for kinetic energy: KE = 0.5 * m * v².
  • Knowledge of how mass and velocity influence energy calculations.
  • Basic algebra skills for manipulating equations.
NEXT STEPS
  • Study the principles of conservation of energy in physics.
  • Learn about the relationship between kinetic energy and momentum.
  • Explore real-world applications of kinetic energy calculations in engineering.
  • Investigate the effects of varying mass and velocity on kinetic energy through experiments.
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding energy transformations in physical systems.

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Can someone give me a clear definition for the change in kinetic energy and how it's determined? The definition in my book doesn't really explain it really well.
Thanks
 
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What is the expression for kinetic energy of mass m moving at some speed (magnitude of velocity) v? If m is constant, what variable must change in order to change kinetic energy?
 

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