Question

Which of the following statements is correct?

• A. For a general translational motion, momentum $\vec{p}$ and velocity $\vec{v}$ need not be parallel
• B. For a general rotational motion, angular momentum $\vec{L}$ and angular velocity $\vec{\omega}$ are always parallel
• C. For a general translational motion, acceleration $\vec{a}$ and velocity $\vec{v}$ are always parallel
• D. For a general rotational motion, angular momentum $\vec{L}$ and angular velocity $\vec{\omega}$ need not be parallel

Answer 1

Answer: (D)

For a general rotational motion, angular momentum $\vec{L}$ and angular velocity $\vec{\omega}$ need not be parallel. For a general translation motion $\vec{p}$ and $\vec{v}$ are always parallel.