Question

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6. Discuss whether or not work I done in the following cases:
a. When a wire is twisted
b. When we press a football
c. When a person carries a hand bag and walks on a level road
d. When a person is reading a book
7. Define the term energy. Give some examples of bodies possessing some
energy.
8. Is energy a scalar quantity or vector quantity?
9. Define 1J of energy.
10. State the factors on which kinetic energy of a moving body depends.
11.Does a man sitting at rest inside a moving car possess kinetic energy?
12.Can a body have momentum without possessing energy?
13.State the factors on which potential energy of a body depend.
14. Give two examples in which a body possesses both kinetic energy and potential energy
15. Explain by an example that a body may possess energy even when it is not in motion. ​

Answer 1

Answer:

what is this

what is this

what is this