Posted by suri on Sunday, February 19, 2012 at 12:47pm.
An airplane starts from rest at the end of a runway and
accelerates at a constant rate. In the first second, the airplane
travels 1.11 m. What is the speed of the airplane at the end of the
second second?

physics  Henry, Monday, February 20, 2012 at 4:02pm
0.5a*1^2 = 1.11 m.
0.5a = 1.11,
a = 2.22 m/s^2,
V1 = at = 2.22 * 1 = 2.22 m/s. = Velocity after 1 sec.
V2 = Vo + at,
V2 = 2.22 + 2.22*1 = 4.44 m/s. = Velocity after 2 sec.
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