Question

The shortest distance covered by a moving body from its initial position to its final position is called :

• A. speed
• B. displacement
• C. velocity
• D. uniform speed

Answer 1

The correct option is B

displacement

Explanation for the correct option(s)

1. A displacement is a vector, which is the shortest distance from the initial to the final position of a point undergoing motion.
2. The displacement of a moving object in a given interval is zero for the object comes back to its initial position after some time.
3. The unit of is meter(m).

Explanation for the incorrect option(s)

1. Speed : Speed of an object is the magnitude of the rate of change of its position with time.
2. Uniform speed: If an object covers an equal distance in equal interval of time, then the body is moving with a uniform speed.
3. Velocity:Vector measurement of the direction and rate of the motion.

Hence, option (B) is correct.