At which point of projectile motion (i) potential energy is maxumum (ii0 kinetec eneragy is maximum (iii) total vechnical energy is maximum.

Explanation

To solve the question regarding the points in projectile motion where potential energy, kinetic energy, and total mechanical energy are maximum, we can break it down step by step.

### Step 1: Maximum Potential Energy
- In projectile motion, potential energy (PE) is given by the formula:
\[ PE = mgh \]
where \( m \) is the mass, \( g \) is the acceleration due to gravity, and \( h \) is the height.
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