AP EAMCET · PHYSICS · Center of Mass Momentum and Collision
Two balls \(X(2 \mathrm{~kg})\) and \(Y(4 \mathrm{~kg})\) approach each other with equal speeds of \(10 \mathrm{~ms}^{-1}\). If the collision is perfectly elastic, then the new velocities of balls \(X\) and \(Y\) are respectively
- A \(\frac{50}{3} \mathrm{~ms}^{-1},-\frac{10}{3} \mathrm{~ms}^{-1}\)
- B \(-\frac{50}{3} \mathrm{~ms}^{-1},-\frac{10}{3} \mathrm{~ms}^{-1}\)
- C \(-\frac{50}{3} \mathrm{~ms}^{-1}, \frac{10}{3} \mathrm{~ms}^{-1}\)
- D \(\frac{50}{3} \mathrm{~ms}^{-1}, \frac{10}{3} \mathrm{~ms}^{-1}\)
Answer & Solution
Correct Answer
(C) \(-\frac{50}{3} \mathrm{~ms}^{-1}, \frac{10}{3} \mathrm{~ms}^{-1}\)
Step-by-step Solution
Detailed explanation
Given, \(m_1=2 \mathrm{~kg}, m_2=4 \mathrm{~kg}\) \(v_1=v_2=10 \mathrm{~ms}^{-1}\) In perfectly elastic collision, momentum and kinetic energy is conserved. \(\therefore\) By conservation of momentum,…
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
- Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are \(Y_1\) and \(Y_2\), respectively. The equivalent Young's modulus is
AP EAMCET 2019 Medium - A particle of mass ' \(m\) ' at rest on a rough horizontal surface with a coefficient of friction ' \(\mu\) ' is given a velocity ' \(u\) '. The average power impaired by friction before it stopsAP EAMCET 2024 Medium
- A body is projected vertically upwards with a velocity \(u\) from the top of a tower. Time taker by it to reach the ground is \(n\) times, then the time taken by it to reach the highest point in its path. Height of the tower isAP EAMCET 2018 Medium
- A large open tank has two holes in the wall. One is a square hole of side \(L\) at a depth \(y\) from the top and the other is a circular hole of radius \(R\) at a depth \(4 y\) from the top. When the tank is completely filled with water, the quantities of water flowing out per second from the two holes are the same. Then value of \(R\) isAP EAMCET 2011 Medium
- Which of the following is/are the property/properties of a monochromatic electromagnetic wave propagating in the free space?
1. Electric and magnetic fields will have a phase difference \(\frac{\pi}{2}\).
2. The energy of the wave is distributed equally between electric and magnetic fields.
3. The pressure exerted by the wave is the product of its speed and energy density.
4. The speed of the wave is equal to the ratio of the magnetic field to the electric field.AP EAMCET 2019 Easy - Magnifying power of an astronomical telescope for normal adjustment is 10 and length of the telescope is \(110 \mathrm{~cm}\). Magnifying power of the same telescope, when the image is formed at the near point isAP EAMCET 2018 Medium
More PYQs from AP EAMCET
- If the inverse point of the point \((-1,1)\) with respect to the circle \(x^2+y^2-2 x+2 y-1=0\) is \((p, q)\), then \(p^2+q^2=\)AP EAMCET 2024 Hard
- A line is passing through the point \((4,3)\) and the sum of its intercepts made on the coordinate axes is 14 . Then an equation of that line isAP EAMCET 2018 Medium
- Given the function then is equal toAP EAMCET 2021 Easy
- Metal ' \(\mathrm{M}\) ' in the following reaction is
\(2 \mathrm{MNO}_3 \rightarrow \mathrm{M}_2 \mathrm{O}+2 \mathrm{NO}_2+\frac{1}{2} \mathrm{O}_2\)AP EAMCET 2022 Easy - The half life of a radioactive substance is 10 minutes. If \(n_1\) and \(n_2\) are the number of atoms decayed in 20 and 30 minutes respectively, then \(\mathrm{n}_1: \mathrm{n}_2=\)AP EAMCET 2025 Medium
- The set of values of \(x\) for which the inequalities \(x^2-3 x-10 < 0, \quad 10 x-x^2-16>0 \quad\) hold simultaneously, isAP EAMCET 2007 Easy