21. . . . . . . . . has two types of energy?
22. What does mechanical energy equal?
23. A simple machine helps a person in doing
24. The energy of wind is
25. What is the formula for power-
26. What will be the kinetic energy of an object weighing 22 kg moving at a speed of 5 m/s?
27. What does the raised hammer have?
28. Which of the following the work done by a body does not depend on?
29. Which of the following does not have kinetic energy?
30. If an object is rotated in a circular path, what will be the work done on it in one rotation?
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