Question

Looking at the image below (a roller coaster model), explain why the potential energy went from 100 (at top) to zero, and the kinetic energy from zero to 100 (joules)?

Answer 1

Step-by-step explanation:

The total energy at all times is equal to the sum of kinetic and potential energy.

Eu = Ep + Ek

If an object has reached a finite height point and is stationary, then the potential energy is maximum (100 J) and the kinetic energy is equals to zero.

If the same object started to fall before the impact on the ground itself, the kinetic energy is maximum (100 J) and the potential energy is minimum ie zero.

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