Momentum of 2 kg body at 5 m/s.

**The reasoning** Momentum is simply **mass × velocity**. Think of it as "how much motion an object carries." The formula is: **p = mv** Where: - p = momentum - m = mass = 2 kg - v = velocity = 5 m/s So: p = 2 kg × 5 m/s = **10 kg·m/s** That's it! Straight multiplication. This is the **principle of linear momentum** — the product of how heavy something is and how fast it's moving. **Why the wrong options tempt you** - **A) 2.5** — You divided (2 ÷ 5) instead of multiplying. Classic panic mistake! - **B) 7** — You added (2 + 5). Momentum isn't a sum; it's a product. - **D) 25** — You squared the velocity (5²) then forgot about the 2 kg properly, or mixed up kinetic energy formula (½mv²). **Quick takeaway** Momentum = mass × velocity. No tricks, no shortcuts — just multiply the two numbers and attach the unit kg·m/s. If you see mass and velocity, think **multiply immediately**!