Kinetic energy is the energy possessed by an object when that object is moving in space. The higher the mass of an object or higher the speed of an object the higher the kinetic energy will be.
So to calculate the Kinetic Energy we can use the following formula
K.E=(1/2)*m*v^2
Inserting the values in formula gives:
K.E=1/2*7.26*2^2
14.52J
This is the final answer which gives the kinetic energy of the ball.
It must gain an electron because if the proton number was to change it would no longer be the same element.
The wave nature of light, due to the experiment having bright and dark bands corresponding to places where you have constructive and destructive interference.
