MHT CET 2025 25th April Evening Shift | Center of Mass and Collision Question 2 | Physics

An object of mass ' $m$ ' moving with velocity ' $u$ ' collides with another stationary object of mass ' $M$ ' and stops just after the collision. The coefficient of restitution is

$\frac{\mathrm{m}}{\mathrm{M}+\mathrm{m}}$

$\frac{M-m}{M+m}$

$\frac{\mathrm{m}}{\mathrm{M}}$

MHT CET 2025 19th April Morning Shift

MCQ (Single Correct Answer)

-0

There is head-on elastic collision between the two particles moving in the same direction with speeds $5 \mathrm{~m} / \mathrm{s}$ and $3 \mathrm{~m} / \mathrm{s}$ respectively. After collision, the velocity of the first particle becomes $4 \mathrm{~m} / \mathrm{s}$ in the same direction. The velocity of the second particle should be

$6 \mathrm{~m} / \mathrm{s}$ in the same direction.

$4 \mathrm{~m} / \mathrm{s}$ in the same direction.

$2 \mathrm{~m} / \mathrm{s}$ in the opposite direction.

$3 \mathrm{~m} / \mathrm{s}$ in the same direction.

MHT CET 2024 16th May Evening Shift

MCQ (Single Correct Answer)

-0

Three identical metal balls each of radius ' $r$ ' are placed such that an equilateral triangle is formed when centres of three ball are joined. The centre of mass of the system is located at

centre of one of the balls.

point of intersection of medians.

line joining centres of any two balls.

on the circumference of any one of the balls.

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

In case of system of two-particles of different masses, the centre of mass lies

at the mid-point of line joining the two particles.

on the line joining the two particles.

at one end of the line joining the two particles.

on the line perpendicular to the line joining the two particles.

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