Question

Estimate the kinetic energy (in GJ) of a 93,000 metric ton aircraft carrier moving at a speed of at 32 knots. You will need to look up the definition of a nautical mile to use in converting the unit for speed, where 1 knot equals 1 nautical mile per hour.

Answer 1

Answer:

kinetic Energy = 12.58 GJ

Explanation:

1 metric ton is equal to 1000 kg

then,

93000 metric ton

Mass is m = 93000 x 1000 kg

speed is v = 32 knots

1 knot is 0.514 m/s

then ,

v = 32 x 0.514 = 16.448 m/s

To solve for the Kinetic Energy (KE), we have;

KE = 0.5 x m x v²

KE = 0.5*93000*1000*(16.448)²

     = 12.58 x $10^{9}$ J

      = 12.58 GJ