Q. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

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Q. The unit of power in S.I. units is

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Q. The velocity ratio for the second system of pulleys is n.

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Q. The law of motion involved in the recoil of gun is

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Q. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.

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Q. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

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Q. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

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Q. The forces, which meet at one point and their lines of action also lie on the same plane, are known as

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Q. The amount by which the outer edge of the rail is raised, is known as super-elevation.

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Q. The unit of energy in S.I. units is

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Q. The angle of inclination of the plane at which the body begins to move down the plane, is called

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Q. Which of the following statement is incorrect?

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Q. According to lami's theorem

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Q. The amplitude is always __________ radius of the circle.

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Q. When a body falls freely under gravitational force, it possesses __________ weight.

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Q. A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

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Q. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

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Q. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.

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Q. The friction experienced by a body, when at rest, is known as

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Q. The moment of inertia of a solid sphere of mass m and radius r is

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