Question

The rate of change of distance is called

Answer 1

The rate of change of distance is called velocity.

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Answer 2

The rate of change of distance is called speed.

• The rate of change of distance is speed ( not displacement). The same distance in multiple directions is referred to as the same distance.
• As a result, if we pretend to define acceleration as the rate of change in speed, then accelerations derived in this manner will be identical regardless of direction. This is because the distance is a scalar quantity whereas displacement is a vector quantity.
• Velocity is the rate of change of displacement, and it is also a vector variable, whereas speed is a scalar quantity. As a vector quantity, acceleration is the rate of change of velocity.
• As a result, the answer to the question is speed.