Question

An aircraft with a mass of 300 000kg is flying at an altitude of 2000 m with a speed of 100 m / s. What is the kinetic energy of the aircraft?

Answer 1

KE =1/2*mass*speed means 300000*100*1/2 joule

Answer 2

Answer:

1.5 x 10^6 kj

Explanation:

Formula:

Kinetic energy = 1/2 mv^2

Mass = 300 000kg

velocity = 2000 m

Therefore,

kinetic energy = 1/2*300,000*100^2

kinetic energy = 1.5 x 10^9 kgm^2/s^2

Convert 1.5 x 10^9 kgm^2/s^2 to kilojoules

= 1.5 x 10^6 kj

Hope it helps !!