Q
According to the first law of motion, what will happen to a ball rolling on a smooth, horizontal surface if no external force acts on it?
RRB Group D
11 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:
B
The ball will continue to roll at a constant speed in the same direction.
Newton’s first law describes inertia: an object resists changes in its state of rest or uniform motion unless acted on by a net external force.