To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the *takeoff velocity*, depends on several factors, including the weight of the aircraft and the wind velocity.

A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 m long. Assume that the plane

t_{TO} = 26.8 s

**What is the speed v _{TO} of the plane as it takes off?**

v_{TO} = 134 m/s

**What is the distance d _{first} traveled by the plane in the first second of its run?**

d_{first} = 2.50 m

**What is the distance dlast traveled by the plane in the last second before taking off?**

d_{last} = 132 m

**What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway?**

70 %