Question

(iv) State the energy changes that occur in the following : [2]

(a) The unwinding of a watch spring. (b) Burning of coal.

(c) Lighting of a torch bulb. (d) A electric generator

(v) Name the type of energy ( kinetic or potential) possessed by the following :

(a) A moving arrow. (b) A compressed spring. [2]

(c) A body sliding on an inclined plane.

(d) A moving car.​

Answer 1

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I.

a. Kinetic energy

b. Chemical change

c. Both physical and chemical changes 

d. Changes kinetic energy to electrical energy 

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II.

a. Kinetic energy

b. Elastic potential energy

c. Kinetic energy

d. Kinetic energy

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