A70 kg boy is about to dive 5 meters into the water. how much kinetic energy will he have when he is 2 yards above the water?

initial height of the boy when he jump or dive is 5 meter

now his final position is 2 yards above the surface

as we know that

now by energy conservation we can say

change in potential energy = gain in kinetic energy

divide both sides by mass "m"

Now kinetic energy will be given as

so his kinetic energy will be 2175 J

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.