Kinetic energy calculation

[Zoyberg]

Bookworm (who I can't get hold of) advised that the energy of a 50 tonne aircraft travelling at 140 knots (70 metres/second) equated to 125 M J

I am interested to know what the percenatge kinetic energy difference is between a
51 Tonne aircraft landing at 119 knots (fullish A319)..... and a 60 Tonne aircraft landing at 142 knots (fullish B737-800).

I know energy relates to the square of the speed but don't know how to factor in weight.

Thanks in advance