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

In summary, kinetic energy is the energy an object has due to its motion, calculated by its mass and velocity. It can change when the velocity changes, with an increase resulting in an increase and a decrease resulting in a decrease. The equation for calculating change in kinetic energy is ΔKE = 1/2 * m * (vf^2 - vi^2), with factors such as mass, velocity, external forces, and friction affecting the change. The change in kinetic energy is equal to the work done on the object, creating a direct relationship between the two.
  • #1
bearhug
79
0
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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  • #2
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?
 
  • #3
for asking about this topic. Kinetic energy is the energy an object possesses due to its motion. The change in kinetic energy refers to the difference in the amount of kinetic energy an object has at two different points in time. It is determined by calculating the difference between the initial kinetic energy and the final kinetic energy of the object. This can be expressed through the equation ΔKE = KEfinal - KEinitial. I hope this helps clarify the concept for you. If you have any further questions, please don't hesitate to ask.
 

What is kinetic energy?

Kinetic energy is the energy that an object possesses due to its motion. It is calculated by the mass of the object multiplied by the square of its velocity.

How does kinetic energy change?

Kinetic energy can change when the velocity of an object changes. An increase in velocity will result in an increase in kinetic energy, while a decrease in velocity will result in a decrease in kinetic energy.

What is the equation for calculating change in kinetic energy?

The equation for calculating change in kinetic energy is ΔKE = 1/2 * m * (vf^2 - vi^2), where ΔKE is the change in kinetic energy, m is the mass of the object, vf is the final velocity, and vi is the initial velocity.

What factors affect change in kinetic energy?

The factors that affect change in kinetic energy include the mass of the object and the velocity of the object. Other factors such as external forces and friction can also affect the change in kinetic energy.

What is the relationship between change in kinetic energy and work?

The change in kinetic energy of an object is equal to the work done on the object. This means that when work is done on an object, its kinetic energy changes. Conversely, when an object does work, its kinetic energy changes as well.

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