The tendency of an object to keep rotating; the rotational version of linear momentum. A vector quantity with magnitude and direction.

The resistance of an object to rotational motion (kg·m²).

The rate at which an object is rotating or revolving, measured in radians per second (rad/s).

The change in angular momentum caused by a torque acting over a time interval.

A rotational force (N·m).

The angular impulse equals the change in angular momentum: $\Delta L = \int_{t_1}^{t_2} \tau , dt$

1. Identify the moment of inertia (I). 2. Determine the angular velocity ($\omega$). 3. Use the formula: $L = I\omega$.

1. Determine the distance (r) from the reference point. 2. Find the mass (m) and velocity (v) of the object. 3. Measure the angle ($\theta$) between r and v. 4. Use the formula: $L = rmv \sin \theta$.

1. Determine the torque ($\tau$) applied. 2. Measure the time interval ($\Delta t$) over which the torque is applied. 3. Use the formula: Angular Impulse = $\tau \Delta t$.

1. Determine the final angular momentum ($L_f$). 2. Determine the initial angular momentum ($L_i$). 3. Use the formula: $\Delta L = L_f - L_i$.

1. Obtain a torque vs. time graph. 2. Calculate the area under the curve of the graph. 3. The area represents the angular impulse.

Fingers: direction of $\vec{r}$, Curl: direction of $\vec{p}$, Thumb: direction of $\vec{L}$