Another Pyhsics Question?

Question

A 200,000kg DC-10 aircraft uses a run of 3.6km to achieve its takeoff speed 320km/h. If each of the three engines produces the same thrust and the acceleration is uniform, find the net thrust per engine. thxs again

Answer 1

v^2 - v0^2 = 2as
v0 = 0
a = v^2/(2s)
a = [(350 km/hr)(1000 m/km)(1 s/3600 hr)]^2/(2*3600 m)
a ≈ 1.312800
F = ma
T = (1/3)F ≈ (1/3)(200,000)(1.312800)
T ≈ 87,520 N