50 POINTS

please answer :)

What is the Kinetic Energy of this?

mass = 4kg
g = 10 m/s^2 (im supposed to round so not 9.8)
h = 1.25

i think i know but not sure :)​

or can someone just explain how you find kinetic energy (doesn't have to do with my problem just an example) cause my teachers don't even teach teach stuff anymore they just "work" out a problem without explaining the different parts of it and expect everyone to know

thank you :)​