Ans. NCERT solutions in class 9 Chapter 11 by Vedantu aim to help students get definite clarity on what they should focus on while preparing for their exams. Along with brief summaries on every topic and subtopic, you will also have access to different question banks that you can refer to. Further, all the questions and answers and explanations are precise, easy to understand, and reliable for quick preparation of exams. With the right study material, you can take the benefit of the doubt and gain essential knowledge on the concepts of work and energy.