In terms of vector, the angle of inclination is:

Conservation of Energy

Work is defined to be the amount of energy transferred to another system by a force acting through a distance.

The law of conservation of energy states that energy cannot be created or destroyed; it can only be transformed from one state to another.

Therefore, in this project, the ball has gravitational potential energy transformed to kinetic potential energy.

Upon doing the experiment, we have to find the initial and final energy of the ball and track.

m - Mass of the ball,

g - acceleration due to gravity, (g= 9.81ms^-2 ) tri h is the change of vertical displacement.