a. (i) What are the two main types of potential energy ?
(ii) State two factors on which the potential energy of a body at a certain height above
the ground depends?
b. (i) A cyclist doubles his speed. How will his kinetic energy change?
(ii) Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height
above the ground. Which of the two has greater potential energy?
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This is a (i)
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(ii) Potential energy of a body in the raised (or lifted) position depends on two factors : (1) the mass of the body greater the mass of the body, greater is the potential energy of the body), and (2) the height of the body above the ground (greater the height of the body, greater is its potential energy.)
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