AP EAMCET · PHYSICS · Motion In One Dimension
A biker travels \(\frac{1}{3}\) of the distance \(L\) with speed \(v_1\) and \(\frac{2}{3}\) of the distance with speed \(v_2\). Then the average speed is
- A \(\frac{v_1 v_2}{v_1+v_2}\)
- B \(\frac{3 v_1 v_2}{2 v_1+v_2}\)
- C \(\frac{3 v_1 v_2}{v_1+2 v_2}\)
- D \(\frac{v_1+v_2}{v_1 v_2}\)
Answer & Solution
Correct Answer
(B) \(\frac{3 v_1 v_2}{2 v_1+v_2}\)
Step-by-step Solution
Detailed explanation
The given situation is shown below Average speed \(=\frac{\text { Total distance }}{\text { Time taken }}\) In given situation time to cover first part, \(t_1=\frac{L / 3}{v_1}=\frac{L}{3 v_1}\) \((\therefore\) Time \(=\) Distance \(/\) Speed \()\) and time to cover second part…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- A fan is rotating with an angular speed \(300 \mathrm{rpm}\). The fan is switched off, and it takes \(80 \mathrm{~s}\) to come to rest. Assuming constant angular deceleration, the number of revolutions made by the fan before it comes to rest isAP EAMCET 2022 Medium
- A body is suspended by a light string. The tensions in the string when the body is in air, when the body is totally immersed in water and when the body is totally immersed in a liquid are respectively \(40.2 \mathrm{~N}\), \(28.4 \mathrm{~N}\) and \(16.6 \mathrm{~N}\). The density of the liquid isAP EAMCET 2018 Hard
- Two charges \(Q\) and \(4 Q\) are separated by a distance of \(6 \mathrm{~cm}\). The distance of the point from \(4 Q\) at which net electric field is zero isAP EAMCET 2023 Easy
- The magnitude of the axial field due to a short bar magnet at a distance of \(50 \mathrm{~cm}\) from its mid-point is (The magnetic moment of the bar magnet is \(0.4 \mathrm{Am}^2\) )AP EAMCET 2023 Easy
- The power dissipated by a uniform wire of resistance \(100 \Omega\) when a potential difference of 120 V is applied across its ends isAP EAMCET 2025 Easy
- Two long parallel plates and are separated by a distance of with an electric field of between the plates directed normally from plate to plate as shown in the figure. An electron is projected from plate with velocity at an angle of with the
surface of plate . The maximum value of so that the electron does not hit plate is
Assume gravity free space, charge of electron and mass of electron
AP EAMCET 2019 Hard
More PYQs from AP EAMCET
- A plane \(\pi\) given by \(a x+b y+11 z+d=0\) is perpendicular to the planes \(2 x-3 y+z=4,3 x+y-z=5\) and the perpendicular distance from the origin to the plane \(\pi\) is \(\sqrt{6}\) units. If all the intercepts made by the plane \(\pi\) on the coordinate axes are positive, then \(d=\)AP EAMCET 2025 Hard
- If the lines represented by the equation \(4 x y+6 x-8 y+c=0\) form a rectangle with the coordinate axis then the area of the rectangle (in sq. units) isAP EAMCET 2018 Medium
- If \(\sin x-\sin y=\frac{27}{65}\) and \(\cos x-\cos y=\frac{-21}{65}\), then \(\sin (x+y)=\) \(\sin \mathrm{x}-\sin \mathrm{y}=\frac{27}{65}\) మరియు \(\cos \mathrm{x}-\cos \mathrm{y}=\frac{-21}{65}\) అయితే, \(\sin (\mathrm{x}+\mathrm{y})=\)AP EAMCET 2025 Medium
- Consider the following reaction
\(\mathrm{N}_2(g)+3 \mathrm{H}_2(g) \longrightarrow 2 \mathrm{NH}_3(g)\)
The rate of this reaction in terms of \(\mathrm{N}_2\) at \(T \mathrm{~K}\) is \(\frac{-d\left[\mathrm{~N}_2\right]}{d t}=0.02 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\). What is the value of \(-d\left[\mathrm{H}_2\right] / d t\) (in units of \(\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}\) ) at the same temperature.AP EAMCET 2019 Medium - If \(\alpha, \beta\) and \(\gamma\) are the roots of the equation \(x^3-13 x^2+k x+189=0\) such that \(\beta-\gamma=2\), then \(\beta+\gamma: \mathrm{k}+\alpha=\)AP EAMCET 2025 Medium
- In a \(\triangle A B C, \angle C=60^{\circ}\) and \(\angle A=75^{\circ}\). If \(D\) is a point on \(A C\) such that the area of \(\triangle B A D\) is \(\sqrt{3}\) times the area of \(\triangle B C D\), then the measure of \(\angle A B D\) isAP EAMCET 2020 Easy