41. In uniform circular motion, the linear velocity is perpendicular to
42. Flywheel is an important part of a steam engine because it :
43. The following particles move with same kinetic energy. Which of them has maximum momentum ?
44. Should cars have bumpers that collapse under impact?
45. When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance ?
46. The odometer guage indicates
47. If a force acts upon two objects at rest, and having different masses for the same amount of time, then which one of the following will be the same for both the objects?
48. 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 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 given above is/are correct?
49. The rate of change of linear momentum of a body falling freely under gravity is equal to it's ________ ?
50. According to the theory of relativity, which of the following always remains constant ?
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