A 20 kg object falls from a height of 30 meters. How many jouls of kinetic energy will the object have just before it hits the ground?

parameters given are :

mass(m)=20kg

height(h)=30m

acceleration due to gravity(g)=9.8m/s squared

But K.E=1/2MV2 = mgh = 20x9.8x30 =5880 joules or 5.88 kilo-joules.