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A particle starts from rest and moves in a straight line suc...

A particle starts from rest and moves in a straight line such that its velocity, v, at time t seconds is given by v=(3t22t)ms1. Determine the acceleration when t = 2 secs.

A.

4ms2

B.

6ms2

C.

8ms2

D.

10ms2

Correct answer is D

v(t)=(3t22t)ms1

a(t)=dvdt=(6t2)ms2

a(2)=6(2)2=122=10ms2