Angular Momentum Review

What are the units for angular momentum?

• kg⋅m/s

• kg⋅m²/s

• kg⋅m/s²

• kg⋅m²⋅s

A child runs at a merry-go-round as shown in the image (ignore the equations, it was hard to crop). What is the angular momentum of the child just before the collision?

• $\frac{1}{2}$ $I\cdot\omega^2$

• $\frac{1}{2}$ m⋅ $v^2$

• $m\cdot v$

• $m\cdot v\cdot r$

A child runs at a merry-go-round as shown in the image (ignore the equations, it was hard to crop). What is the linear momentum of the child just before the collision?

• $\frac{1}{2}$ $I\cdot\omega^2$

• $\frac{1}{2}$ m⋅ $v^2$

• $m\cdot v$

• $m\cdot v\cdot r$

A child runs at a merry-go-round as shown in the image. Which of the laws below would be best to use to determine the angular momentum of the child-merrygoround system after the collision?

• Impulse-Angular Momentum Theorem

• Law of Conservation of Angular Momentum

• Law of Conservation of Linear Momentum

• Newton's 3rd Law

A child runs at a merry-go-round as shown in the image. Which of the laws below would be best to use to determine the angular momentum of just the merry-go-round after the collision?

• Impulse-Angular Momentum Theorem

• Law of Conservation of Angular Momentum

• Law of Conservation of Linear Momentum

• Newton's 3rd Law