The velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become

⇦

⇨

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:

1. If two soap bubbles of different radii are connected by a tube
2. Two identical cells of the same e.m.f. and same internal resistance
3. A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
4. In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series
5. An electric motor runs on DC source of emf 200 V and draws a current of 10 A.

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