Question

Calculate the speed of an 8.0*10^4kg airliner with a kinetic energy of 1.1*10^9J.

Answer 1

The velocity will be v = 165.83[m/s]

Step-by-step explanation:

This is a problem where the definition of kinetic energy can be applied, which can be determined with the following equation.

`E_(k)=(1)/(2)*m*v^(2)\\   where:\\m = mass = 80000[kg]\\v = velocity [m/s]\\E_(k)= kinetic energy [J]=1100000000[J]\\Replacing:\\v=\sqrt{(2*E_(k) )/(m) } \\v=\sqrt{(2*1100000000 )/(80000) }\\v=165.83[m/s]`