Q)name type of energy in raised hammer?
Q) when an arrow is shot from a bow, it has kinetic energy. From where does it get the kinetic energy?
Q) a ball is thrown vertically upward. Give the energy transformation? What type of work positive, negative or zero is done by the gravitational force?
Q) a spring which is kept compressed by typing its ends is allowed to dissolve in an acid. What happens to the kinetic energy?
For the first three parts, please refer to the answers provided by @Ajita_Gupta.
(iv) Here, as the spring it being dissolved in the acid, the kinetic energy possessed by it would be converted to chemical and heat energy.