Question

Consider the diagram of the trajectory of a thrown tomato. At what point are the kinetic energy and the potential energy equal to the values at position 1?

Answer 1

The answer is point 3. We know that the speed of a projectile is equal at the same height in the projectiles ascent and descent. Therefore, the projectile has the same kinetic energy at points 1 and 3. Additionally, since the projectile has the same height at these points, its potential energy is the same at points 1 and 3.