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