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

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

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Engineering Mechanics
The term 'Centroid' is

The same as centre of gravity
The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
None of the listed here
The point of suspension

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