Calculating Energy Changes

• Calculate the amount of energy associated with a moving object, a stretched spring, and an object raised above ground level.
• Recall and apply the equation for the kinetic energy of a moving object:

$E_k = \frac{1}{2} m v^2$

• Recall and apply the equation for the elastic potential energy stored in a stretched spring (assuming the limit of proportionality has not been exceeded):

$E_e = \frac{1}{2} k e^2$

• Recall and apply the equation for the amount of gravitational potential energy gained by an object raised above ground level:

$E_p = m g h$

• Investigate and analyse the practical transfer of energy from a gravitational potential energy store to a kinetic energy store.