The work-energy theorem states that the net work done on an object equals its change in kinetic energy. Frictional force does negative work as it opposes motion.
A block of mass 2·0 kg slides on a rough horizontal plane surface. Let the speed of the block at a particular instant is 10 m/s. It comes to rest after travelling a distance of 20 m. Which one of the following could be the magnitude of the frictional force ?
Asked in UPSC NDA 2 2024 · Topic: Mechanics (Work, Energy, and Power)
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