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. A lead bullet of 10 gm travelling at 300 m/s strikes against a block
2. If the value of potential in an A.C circuit is 10 V, the peak value of potential is
3. The escape velocity of a body on an imaginary planet which is thrice the radius
4. The area of cross-section of a steel wire (Y=2.0×10¹¹ N/m²) is 0.1 cm².
5. A wooden stick 2 m long is floating on the surface of water. The surface tension

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