Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 4
6t² - 8t
6f - 8
3t² + 2t

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Engineering Mechanics
The term 'Centroid' is

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
The same as centre of gravity

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