Answer
$\bigtriangleup KE = 207623 KJ$
$\bigtriangleup PE = 1369200 KJ$
Work Step by Step
$\bigtriangleup KE = (1/2)m(v_2^2-v_1^2) $
$m=14000kg;v_2 = 620km/hr = 172.22m/sec;v_1 = 0$
$\bigtriangleup KE = (1/2)*14000*(172.22^2-0^2) $
$\bigtriangleup KE = 207623 KJ$
$\bigtriangleup PE = mg(z_2-z_1)$
$m=14000kg;g = 9.78;z_2=10000;z_1 = 0$
$\bigtriangleup PE = 14000*9.78*(10000-0)$
$\bigtriangleup PE = 1369200 KJ$
