Question

quiz question 5 of 10 the speed at which an object is moving in a specific direction is its choose one option a speed. b acceleration rate. c velocity. d mechanical potential energy rate.

Explanation:

• Option A: Speed is a scalar quantity (only magnitude, no direction), so it does not match the description of "speed in a specific direction".
• Option B: Acceleration rate refers to the rate of change of velocity (change in speed or direction), not the speed in a specific direction.
• Option C: Velocity is a vector quantity that includes both magnitude (speed) and direction, so "the speed at which an object is moving in a specific direction" is the definition of velocity.
• Option D: Mechanical potential energy rate is related to energy transfer or transformation, not to the speed of an object in a direction.

Answer:

C. velocity.