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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