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When it reaches P, which of the following has the greatest value for the stone? 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Which of the following does not possess the ability to do work not because of motion? 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m/s^2, the work done by her after climbing 2 m will be 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Each of the following statements describes a force acting. Which force is causing work to be done? 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh The momentum of a bullet of mass 20g fired from a gun is 10 kg.m/s. The kinetic energy of this bullet in kJ will be 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Water stored in a dam possesses (a) no energy (b) electrical energy (c) kinetic energy (d) potential energy 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh The work done on an object does not depend on the 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. If the value of g be 10 m/s^2, the work done by the girl 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg, Both the spheres are dropped simultaneously from a tower. 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh In case of negative work, the angle between the force and displacement is 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh A car is accelerated on a levelled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car: 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy. (b) If 784 J of work was done in lifting a 20 k... 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth. (b) What is the difference between potential energy and ki... 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh What do you understand by the kinetic energy of a body? (b) A body is thrown vertically upwards. Its velocity goes on decreasing. What happens to its kinetic energy as its velocity becomes zero? 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Define the term ‘energy’ of a body. What is the SI unit of energy. (b) What are the various forms of energy? (c) Two bodies having equal masses are moving with uniform speeds of v and 2v respectively. 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh What happens to the work done when the displacement of a body is at right angles to the direction of force acting on it? Explain your answer. (b) A force of 50N acts on a body and moves it a distance of 4m on a horizontal surface. 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it. (b) How much work is done when a force of 2N moves a body through a distance of 10cm in... 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Define the term ‘work’. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula. 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh A weightlifter is lifting weights of mass 200kg up to a height of 2 meters. If g = 9.8 m/s^2, calculate: (a) potential energy acquired by the weight (b) work done by the weightlifter 3 years ago BidishaKashayap1333 class 9 work power energy lakhmir singh Page 1 / 5 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
