ROTATIONAL MOTION

Which of the following is true for a body rotating with constant angular velocity?

• Its angular displacement is zero
• Its angular acceleration is zero
• Its linear velocity is zero
• It is not moving

What happens to the angular displacement if a body rotates with zero initial angular velocity and constant angular acceleration?

• It increases linearly
• It remains constant
• It increases quadratically with time
• It decreases exponentially

In the equation ω = ω₀ + αt, what does the term αt represent?

• Initial angular velocity
• Final angular velocity
• Total angular displacement
• Change in angular velocity due to acceleration

What is the primary difference between angular speed and angular velocity?

• They have different units
• Speed is always positive, velocity is not
• Angular velocity includes direction, while speed does not
• Speed applies to linear motion

Which of the following represents the rotational analogue of Newton's first law?

• Force equals mass times acceleration
• Every action has an equal reaction
• A rotating body continues in uniform rotational motion unless acted upon by a net torque
• Energy is conserved