| ⇦ | 
| ⇨ |
The motion of a particle along a straight line is described by equation : x= 8 + 12t– t³ where x is in metre and t in second. The retardation of the particle when its velocity becomes zero, is :
Options
(a) 24 ms⁻²
(b) zero
(c) 6ms⁻²
(d) 12 ms⁻²
Correct Answer:
12 ms⁻²
Explanation:
x = 8 + 12t – t³ The final velocity of the particle will be zero, because it retarded.
V= 0 + 12 – 3t² = 0 ⇒ 3t² = 12 ⇒ t = 2 sec
Now the retardation a = dv/ dt = 0 – 6t
a [ t= 2] = – 12 m/s²
retardation = 12 m/s²
Related Questions: - The electric field part of an electromagnetic wave in a medium is represented by
- If in an experiment for determination of velocity of sound by resonance tube
- Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
- A piece of iron is heated in a flame. It first comes dull red then becomes reddish
- An electric current passes through a long straight wire
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The electric field part of an electromagnetic wave in a medium is represented by
- If in an experiment for determination of velocity of sound by resonance tube
- Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
- A piece of iron is heated in a flame. It first comes dull red then becomes reddish
- An electric current passes through a long straight wire
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply