| ⇦ | 
| ⇨ |
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: - Two racing cars of masses m₁ and m₂ are moving in circles of radii
- When the energy of the incident radiation is increased by 20%,
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- A thin rod of length L and mass M is held vertically with one end on the floor
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two racing cars of masses m₁ and m₂ are moving in circles of radii
- When the energy of the incident radiation is increased by 20%,
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- A thin rod of length L and mass M is held vertically with one end on the floor
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
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