Question 21
A torque of 12 N·m acts for 3 seconds on a body. What is the change in angular momentum?
Question 22
If angular velocity and angular acceleration are in opposite directions, what happens to rotational speed?
Question 23
What is the direction of the angular acceleration vector?
Question 24
A planet orbits the sun in an elliptical path. At perihelion, what happens to its angular speed?
Question 25
A diver in mid-air pulls his arms and legs toward his body. What happens to his angular speed?