Which term is the increase in speed around an axis?

Which term is the increase in speed around an axis?

• A. Angular velocity
• B. Torque
• C. Deceleration
• D. Absorption

Answer: (A)

Describing how fast something spins around an axis is captured by angular velocity. It tells you the rate at which angular position changes per unit time and includes the direction of rotation. The magnitude of angular velocity is the rotation speed, usually expressed in radians per second. When the idea is the speed of rotation itself around an axis, angular velocity is the best term because it directly describes how fast the object is turning. If you were talking about how quickly that speed is changing, you’d use angular acceleration. The other terms don’t fit: torque is the twisting force that can cause rotation, deceleration means the rotation speed is decreasing, and absorption isn’t a concept used to describe rotational motion.

Describing how fast something spins around an axis is captured by angular velocity. It tells you the rate at which angular position changes per unit time and includes the direction of rotation. The magnitude of angular velocity is the rotation speed, usually expressed in radians per second. When the idea is the speed of rotation itself around an axis, angular velocity is the best term because it directly describes how fast the object is turning. If you were talking about how quickly that speed is changing, you’d use angular acceleration. The other terms don’t fit: torque is the twisting force that can cause rotation, deceleration means the rotation speed is decreasing, and absorption isn’t a concept used to describe rotational motion.