A body at rest has which type of energy?

**The reasoning** When a body is **at rest**, it has **zero velocity** (v = 0). Kinetic energy depends on motion, calculated as KE = ½mv². If v = 0, then KE = 0 — so no kinetic energy. However, being at rest doesn't mean the body has *no* energy at all. If it's elevated above the ground, held in a compressed spring, or has stored chemical energy, it possesses **potential energy** — energy due to its *position* or *condition*. Think of a book on a shelf: not moving, but if it falls, that stored energy converts to motion. This is the principle of **energy of position vs. energy of motion**. **Why the wrong options tempt you** **A (Kinetic)** — You might think "energy = movement," but kinetic specifically needs motion happening *right now*. **C (Sound) & D (Light)** — These are energy forms released during processes (vibrations, electromagnetic waves), not inherent to a stationary object. **Quick takeaway** At rest = no motion = **potential energy only**; moving = **kinetic energy** — remember: *position* versus *motion*.