Forces and motion scenario: a gear changes turning effect and rotation speed. Which answer best addresses Distance, displacement, speed and velocity and the objective to explain why velocity can change if direction changes even when speed is constant?

The correct answer is: In the gear system scenario, apply speed to explain why velocity can change if direction changes even when speed is constant while keeping speed versus velocity separate.

The correct option is In the gear system scenario, apply speed to explain why velocity can change if direction changes even when speed is constant while keeping speed versus velocity separate.. It is correct because the scenario says a gear changes turning effect and rotation speed, which must be interpreted through Distance, displacement, speed and velocity. This directly supports the learning objective to explain why velocity can change if direction changes even when speed is constant. Use values 5, 11, and 22 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error speed versus velocity.