A Boeing 707 jet aircraft has a takeoff mass of 1.2 x 105 kg. Each of its four engines has a net thrust of 75 kN. Calculate the acceleration and the length of the runway needed to become airborne if the takeoff speed is 73 m/s. (Neglect any frictional forces and air resistance)

1

Answers

2014-12-30T04:31:31+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
v^2-u^2=2as\\\\u=0,\ v=73\ m/sec,\ \ s=? ,\ \ \ a=\frac{F}{m}=\frac{4*75*1000N}{1.2*10^5kg}=2.5 m/sec^2\\\\s=\frac{73^2}{2*2.5}=1065.80\ meters\\

2 5 2