Yes, mechanical energy comprises of both potential energy and kinetic energy. Zero momentum means that velocity is zero. Hence, there is no kinetic energy but the object may possess potential energy.
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๐ก Some Related Questions
Anil lives in a village and his school is 8 km away from his home. His father suggests buying a motor cycle to go to school. Anil opposes the idea and opts for a bicycle instead. (๐) Write the energy transformation taking place while Anil rides his bicycle. (๐๐) Justify the stand taken by Anil in your own words. (๐๐๐) How can he convince his friends to do the same?
Open Answer ยปShyam and his friends were playing with a catapult (gulel) in his garden. Several mangoes were dislodged and fell with the help of catapult. One of his friend was aiming the catapult on a bird. Shyam prevented him from doing so. (๐) Name the energy possessed by the stretched string of the catapult. (๐๐) What will happen if the stone is thrown without stretching the string of a catapult? (๐๐๐) Why did Shyam prevent his friend from aiming at the bird? Which quality is highlighted in Shyam’s behavior?
Open Answer ยปPrachi and Kanchi were observing a building having two different staircase. One slanting and other vertically spiral. Prachi was of the opinion that a person using slanting staircase will be doing more work against gravity but Kanchi thought otherwise. They started arguing. Sanchi, their friend, explained and gave entirely different view and pacified them. (๐) What according to you was the explanation given by Sanchi? (๐๐) What appreciable values do you see in Sanchi?
Open Answer ยปRam’s family was worried about heavy electricity bills to be paid. Their neighbour Mohan suggested some easy and effective steps to reduce the same. Next month’s bill came as a relief to Ram, as the consumption of electricity had reduced by 50 units and so had the bill. (๐) In what other aspects of life can this situation help? (๐๐) What is the unit of energy? (๐๐๐) Write any three steps that you think Mohan might have suggested to Ram.
Open Answer ยปOn a railway station, a passenger hires a coolie to pick his luggage and carry it to the train. When the coolie finished his work, he asked for the money. But the passenger refused to pay him saying that he has done no work. Answer the following questions based on the above information: (๐) Was the passenger right in saying so? (๐๐) What values are not promoted by the passenger? (๐๐๐) Give a situation seen in everyday life when no work is said to be done by you even though you get tired.
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