Statements (ii), (iii) and (v) are True, while (i) and (iv) are False. Work requires displacement and a motionless stretched rubber band stores potential energy rather than possessing kinetic energy due to lack of motion.
State whether True or False. (i) Work is said to be done when a force is applied, even if the object does not move. (ii) Lifting a bucket vertically upward results in positive work done on the bucket. (iii) The SI unit for both work and energy is joule (J). (iv) A motionless stretched rubber band has kinetic energy. (v) Energy can change from one form to another.
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Statement (i) is False because work requires displacement in the direction of force. Statement (ii) is True because upward lifting force and displacement share the same direction. Statement (iii) is True because joule is the SI unit for both work and energy. Statement (iv) is False because a stationary stretched band stores potential energy, not kinetic energy. Statement (v) is True because energy transforms between forms.
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