“Work and Energy” is a chapter in the NCERT Science textbook of class 9. In day-to-day life, we consider any useful physical or mental labour as work. But work is defined differently in science. Similarly, we often use the term energy in our daily life, but in science, energy is defined with specific terminology and characteristics. Let’s learn in detail about work and energy as defined in physics in this four-part series. Please go through the ppt to understand how despite working hard, sometimes, according to the scientific community, work done by you will be zero or negligible. You will also understand the scientific concept of work, and work done by a constant force.

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