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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 proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.
- A straight conductor of length 0.4 m is moved with a speed of 7 ms⁻¹perpendicular
- RMS velocity of gas is proportional to
- A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
- Two coils have the mutual inductance of 0.05 H.
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.
- A straight conductor of length 0.4 m is moved with a speed of 7 ms⁻¹perpendicular
- RMS velocity of gas is proportional to
- A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
- Two coils have the mutual inductance of 0.05 H.
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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