If the particle is moving along a straight line given by the relation x=2-3t+4t^(3) where s is in cms., and t in sec. Its average velocity during the third sec is

If the particle is moving along a straight line given by the relation

1.	If the particle is moving along a straight line given by the relation x=2-3t+4t^(3) where s is in cms., and t in sec. Its average velocity during the third sec is
Answer» 73 cm/s 80 cm/s 85 cm/s 90 cm/s Answer :A