Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

Direction of the axis of rotation
Sense of angular displacement
Magnitude of angular displacement
All of these

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Engineering Mechanics
Which of the following statement is correct in connection with projectiles?

All of these
The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.
The velocity, with which a projectile is projected, is known as the velocity of projection.
A path, traced by a projectile in the space, is known as trajectory.

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