A typical loaded commercial jet airplane has an inertia of 2.3×105 kg

How much energy does it take to get the plane to a cruising speed of 270 m/s? (Ignore wind drag.)

Show working out please

Explanation:

The energy that must be given to the jet is equal to its final kinetic energy.

The kinetic energy of an object is the energy possessed by an object due to its motion. It is given by

where

m is the mass of the object

v is its speed

In this problem:

is the mass of the jet (inertia is just another name for mass)

v = 270 m/s is the final speed of the jet

Substituting, we find the final kinetic energy of the jet:

So, this is the energy that must be given to the jet.

i think the answer is a, hope this is right, that would be my best guess.