AP EAPCET 2024 - 22th May Evening Shift | Center of Mass and Collision Question 1 | Physics

A body of mass 30 kg moving with a velocity $20 \mathrm{~ms}^{-1}$ undergoes one-dimensional elastic collision with another ball of same mass moving in the opposite direction with a velocity of $30 \mathrm{~ms}^{-1}$. After collision the velocity of first and second bodies respectively are

$25 \mathrm{~ms}^{-1}, 30 \mathrm{~ms}^{-1}$

$30 \mathrm{~ms}^{-1}, 30 \mathrm{~ms}^{-1}$

$30 \mathrm{~ms}^{-1}, 20 \mathrm{~ms}^{-1}$

$40 \mathrm{~ms}^{-1}, 15 \mathrm{~ms}^{-1}$

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

Two blocks of equal masses are tied with a light string passing over a massless pulley (assuming frictionless surfaces ) acceleration of centre of mass of the two blocks is $\left(g=10 \mathrm{~ms}^{-2}\right)$

AP EAPCET 2024 - 22th May Evening Shift Physics - Center of Mass and Collision Question 1 English

$\frac{5(\sqrt{3}-1)}{2}$

$\frac{5(\sqrt{3}-1)}{2 \sqrt{2}}$

$\frac{5(\sqrt{3}+1)}{2 \sqrt{2}}$

$\frac{5(\sqrt{3}-1)}{\sqrt{2}}$

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

A ball falls freely from rest from a height of 6.25 m on a hard horizontal surface. If the ball reaches a heightd 81 cm after second bounce from the surface, the coefficient of restitution is

0.3

0.45

0.75

0.6

AP EAPCET 2024 - 20th May Morning Shift

MCQ (Single Correct Answer)

-0

A body of mass 2 kg collides head on with another body of mass 4 kg . If the relative velocities of the bodies before and after collision are $10 \mathrm{~ms}^{-1}$ and $4 \mathrm{~ms}^{-1}$ respectively. The loss of kinetic energy of the system due to the collision is

28 J

56 J

84 J

42 J

AP EAPCET Subjects