An object with mass of 50kg is dropping from a height of 25m. what is it’s velocity?

22.1 m/s

Explanation:

We can solve the problem by using the conservation of energy. The mechanical energy is equal to the sum of kinetic energy and potential energy, and it is constant:

where

m is the mass

v is the velocity

g is the gravitational acceleration

h is the heigth of the object

At the moment when the object is dropped, the velocity is still zero, so K=0 and all the energy is gravitational potential energy:

When the object reaches the ground, the height becomes zero: h=0, so the gravitational potential energy is zero and all the energy is now kinetic energy:

So, we can find the velocity:

if they have a finite resultant

grav forces affect all objects magnetic forces affect magnetic objects and electric currents