Practice What Is Angular Acceleration? (2.2) - Angular Velocity and Angular Acceleration

Practice: What is Angular Acceleration?

Lesson 2.2Angular Velocity and Angular Acceleration

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define angular acceleration.
Show hintHide hint
Think of how fast something spins faster or slower.
Question 2.
What are the units of angular acceleration?
Show hintHide hint
What do you get when you divide radians by time?
3Question 3.
What is the definition of angular acceleration?
- Rate of change of linear velocity
- Rate of change of angular velocity
- Constant rotational speed
Show hintHide hint
Focus on what aspect changes when something spins.
4Question 4.
Is angular acceleration a vector quantity?
- True
- False
Show hintHide hint
Think about how rotations can go in different directions.
Question 5.
A spinning wheel speeds from 5 rad/s to 25 rad/s in 4 seconds. Calculate the angular acceleration, and discuss its physical significance in terms of motion.
Show hintHide hint
Use the defined formula and consider what forces would create this change.
Question 6.
A toy top spins steadily, then slows to a stop over 10 seconds due to friction. If its initial angular velocity was 30 rad/s, find its angular acceleration, and explain the implications of negative acceleration.
Show hintHide hint
Remember that negative acceleration implies the object is slowing down.

5 more questions in this section. Enroll free to practise them all.