Multiple choice

If a body is moving uniformly in a straight line, the force on the body is

  1. maximum

  2. minimum

  3. zero

  4. average

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a body moves uniformly in a straight line, its velocity is constant (both speed and direction unchanged). By Newton's first law, this means zero net force acts on it. Zero force is neither maximum, minimum, nor average - it's simply zero. Any acceleration would require a net force, causing non-uniform motion.