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

If the paticle is moving along a straight line given by the relation s

1.	If the paticle is moving along a straight line given by the relation s=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