Equations Of Motion
Particle with initial velocity 10 m/s decelerates uniformly at 2 m/s². Time to stop:
Select the correct option:
Solution
5 s
Using the first equation of motion: v=u+at Given:
- Initial velocity u=10 m/s
- Final velocity v=0 (stops)
- Acceleration a=−2 m/s2 (deceleration) Substituting the values: 0=10−2t 2t=10⟹t=5 s.
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About This Question
- Subject
- physics
- Chapter
- kinematics
- Topic
- equations of motion
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
5 s
Using the first equation of motion: v=u+at Given:
- Initial velocity u=10 m/s
- Final velocity v=0 (stops)
- Acceleration a=−2 m/s2 (deceleration) Substituting the values: 0=10−2t 2t=10⟹t=5 s.
This easy difficulty physics question is from the chapter kinematics, covering the topic of equations of motion. It appeared in the 2025 exam.
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