Difficulty in starting or stopping motion of a body is due to:

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Accepted Answer

1. **Inertia** is the property of a body that makes it resist changes in its motion.

2. It comes from the mass of the object. A larger mass has more inertia.

3. **Momentum** is $p=mv$, which measures motion, not the tendency to resist change.

4. So the difficulty in starting or stopping motion is due to **inertia**.

FINAL_ANSWER: b

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