AP EAMCET Kinetic Energy Weightage 2025

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AP EAMCET 2025 Preparation

Section

No. of questions

Overall  Weightage (in %)

Kinetic Energy

1-2

2%

Topics

Sub-Topics

Definition of Kinetic Energy

• Kinetic Energy (KE) refers to the energy possessed by a body because of its motion.
• Formula: KE=12mv2KE = \frac{1}{2} mv^2KE=21​mv2 where:
  • mmm is the mass of the object
  • vvv is the velocity of the object

Work-Energy Theorem:

• The Work-Energy Theorem implies that the work done by the net force on an object is equal to the change in its kinetic energy. W=ΔKE=12mv2−12mu2W = \Delta KE = \frac{1}{2} mv^2 - \frac{1}{2} m u^2W=ΔKE=21​mv2−21​mu2 where:
  • uuu is the initial velocity
  • vvv is the final velocity
  • WWW is the work done

Conservation of Mechanical Energy

• In an isolated system (where no non-conservative forces such as friction are acting), the total mechanical energy (kinetic + potential energy) is conserved. KEinitial+PEinitial=KEfinal+PEfinalKE_{\text{initial}} + PE_{\text{initial}} = KE_{\text{final}} + PE_{\text{final}}KEinitial​+PEinitial​=KEfinal​+PEfinal​
• This principle helps solve many problems concerning the motion of objects under the influence of gravity or other forces.

Kinetic Energy and Work Done

• Kinetic energy is related to the work done on an object. The net work done on an object changes its kinetic energy as per the work-energy principle.
• Example: A car accelerating from rest; work done by the engine results in an increase in the car's kinetic energy.

Velocity and Kinetic Energy

• Kinetic energy depends upon the square of the velocity. Hence, doubling the velocity of an object quadruples its kinetic energy.
• Practice problems concerning objects moving at various speeds and how their kinetic energies compare.

Kinetic Energy in Different Types of Motion

• Linear Motion: For an object proceeding in a straight line, calculate kinetic energy based on its speed and mass.
• Projectile Motion: Analyzing kinetic energy at various points in the trajectory (for instance, at the highest point of a projectile, kinetic energy is related to horizontal velocity).
• Rotational Motion: For rotating objects, kinetic energy is given by KErot=12Iω2KE_{\text{rot}} = \frac{1}{2} I \omega^2KErot​=21​Iω2, where III is the moment of inertia and ω\omegaω is the angular velocity.

Work-Energy Applications:

• Problems concerning calculating work done by varying forces and finding the corresponding changes in kinetic energy.
• Examples could involve objects accelerating or decelerating under the influence of forces, such as friction or tension.

Elastic and Inelastic Collisions (Related to Kinetic Energy)

• In elastic collisions, the total kinetic energy is conserved.
• In inelastic collisions, some of the kinetic energy is converted into other forms of energy (like heat or sound), but momentum is still conserved.

Potential Energy and Kinetic Energy

• Relationship between kinetic and potential energy, especially in systems such as pendulums or freely falling objects.
• Understanding the transformation between potential and kinetic energy in systems under gravitational influence.

Name of the Book

Name of the Author

IIT JEE Physics

D C Pandey

Concepts of Physics (Volumes 1 and 2)

H C Verma

IIT JEE Physics by EAMCET Physics (Andhra Pradesh & Telangana) by Problems in General Physics

I.E. Irodov

EAMCET Physics (Andhra Pradesh & Telangana

Arihant Experts

Optics and Modern Physics

D C Pandey

Particulars

Details

Mode of AP EAMCET examination

Computer-based test (CBT)

Duration of the AP EAMCET Physics examination

1 hour

Total number of questions in the AP EAMCET Physics section

40

Medium of AP EAMCET Physics exam

English & Telugu (Candidates who are willing to appear for the exam in the Urdu language have to appear at Kurnool exam center only)

Types of question

MCQ ( multiple choice questions)

Marking scheme

• 
  1 mark for every correct answer
• No negative marking is allotted

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