| ⇦ | 
| ⇨ |
The velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become 16 ms⁻¹.The velocity at 2 s before the given instant, will be
Options
(a) 6 ms⁻¹
(b) 4 ms⁻¹
(c) 2 ms⁻¹
(d) 1 ms⁻¹
Correct Answer:
6 ms⁻¹
Explanation:
Given: v=16 ms⁻¹;u=10 ms⁻¹;t= 3s; a=?
v=u+at
16=10+a(3)
3a=16-10⇒3a=6⇒a=2 ms⁻²
before 2 s,⇒10=u+2×2⇒u=6 ms⁻¹.
Related Questions: - A particle moves in a circle of radius 5 cm with constant speed and time period
- What is the time taken by moon light to reach earth?
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
- Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
- A coin placed on a rotating turn table just slips,if it is placed at a distance
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle moves in a circle of radius 5 cm with constant speed and time period
- What is the time taken by moon light to reach earth?
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
- Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
- A coin placed on a rotating turn table just slips,if it is placed at a distance
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