ROTATIONAL MOTION

How is angular displacement represented in vector form?

• Tangential to the path
• Radially outward
• Along the axis of rotation according to right-hand rule
• Opposite to linear velocity

If the angular velocity of a wheel doubles in a given time, what can be said about its angular acceleration?

• It is zero
• It is negative
• It is constant only if the increase is uniform
• It is infinite

What does zero angular displacement imply about the body's rotation?

• It did not rotate at all
• It is moving linearly
• It has returned to its initial angular position
• It has constant angular velocity

What is the average angular velocity of a body that goes from ω₀ to ω under constant acceleration?

• ω₀
• ω
• (ω₀ + ω)/2
• ωt

In Example 6.11, what must be done to the angular speeds before using them in the equation ω = ω₀ + αt?

• Convert to linear speed
• Use as is
• Convert from rpm to rad/s
• Multiply by radius