State whether the following objects possess kinetic energy, potential energy, or both :

(a) A man climbing a hill
(b) A flying aeroplane
(c) A bird running on the ground
(d) A ceiling fan in the off position
(e) A stretched spring lying on the ground.

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Solution

(a) A man climbing up a hill has both kinetic energy as well as potential energy.
(b) A flying aeroplane has both kinetic energy as well as potential energy.
(c) A bird running on the ground possesses only kinetic energy.
(d) When switched off, a ceiling fan possesses only potential energy.
(e) A stretched spring lying on the ground possesses potential energy.

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State whether the following objects posses kinetic energy, potential energy, or both :

(a) A man climbing a hill

(b) A flying aeroplan

(d) A ceiling fan in the off position

(e) A stretched spring lying on the ground.

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