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**djmccabie** A particle of mass 3kg, moves along the horizontal x-axis under the action of a resultant force *F*N. Its velocity *V *m/s at time *t* s.

*v=12t-3t*²

a) given that the particle is at the origin O when t=1, find an expression for the displacement of the particle from O at the time *t* s.

b) Find the acceleration of the particle at time *t* s.

c) Find the power of the force *F* when t=1.5

right for part a I think i am supposed to integrate *v* so i do

∫12t-*3t*² dt (Is this correct? as in am i supposed to write dt? or dx?)

this gives me the result x=6t²-t³ where x = displacement

Is this the answer?

For part b do i differentiate the original equation?

No sure how to do part C

Any help welcome =]