41. Energy possessed by a body due to its motion is known by what name?
42. Falling coconut has-
43. Consider the following statements.
1. There is no net moment on a body which is in equilibrium.
2. The momentum of a body is always conserved.
3. The kinetic energy of an object is always conserved.
Which of the statements (s) given above is/are correct?
1. There is no net moment on a body which is in equilibrium.
2. The momentum of a body is always conserved.
3. The kinetic energy of an object is always conserved.
Which of the statements (s) given above is/are correct?
44. If a man do 'W' work in 't' time, then his power 'P' will be-
45. Which of the following is the electric power's formula?
46. Find the potential energy of an object 3m mass raised from the ground at a height of h-
47. If force F = 0, then work done W = ?
48. A boy of 50 kg mass climbs 45 stairs in 9 seconds. If the height of each stair is 15cm, then calculate his power. (g= 10ms-2)
49. Formula of power is -
50. Which of the following increase or decrease with height?
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