81. apathy{#1} 82. circuitous{#2} 83. disapprobation{#3} -Turito

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$straight A space steel space ball space of space mass space 2 straight m space suffers space one minus dimensional space elastic space collision space with space straight a space row space of space three space steel space balls comma space each space of space mass space straight m. space If space mass space 2 straight m space has space collided space with space velocity space straight v space and space the space three space balls space numbered space 1 comma 2 comma 3 space were space initially space at space rest comma space then space after space the space collision$

PhysicsGeneral

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Physics

$straight A space body space of space mass space 2 space kg space moving space with space straight a space velocity space 3 space straight m divided by straight s space collides space with space straight a space body space of space mass space 1 space kg space moving space with space straight a space velocity space of space 4 space straight m divided by straight s space in space opposite space direction. space If space the space collision space is space head space on space and space completely space inelastic comma space then$

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General

Physics

$straight A space particle space straight A space suffers space an space oblique space elastic space collision space with space straight a space particle space straight B space that space is space at space rest space initially. space If space their space masses space are space the space same comma space then space after space the space collision$

PhysicsGeneral

General

Physics

$straight A space body space moving space towards space straight a space body space of space finite space mass space at space rest space collides space with space it. space It space is space possible space that$

PhysicsGeneral

General

Physics

$In space an space elastic space collision space between space two space particles$

PhysicsGeneral

General

Physics

$An space ideal space spring space is space permanently space connected space between space two space blocks space of space masses space straight M space and space straight m. space The space blocks minus spring space system space can space move space over space straight a space smooth space horizontal space table space along space straight a space straight space line space along space the space length space of space the space spring space as space shown space in space figure. space The space blocks space are space brought space nearer space to space compress space the space spring space and space then space released. space In space the space subsequent space motion$

PhysicsGeneral

General

Physics

$Two space particles space of space masses space straight m space and space 2 straight m space move space with space acceleration space 2 a i with hat on top italic space text and end text minus a i with italic hat on top italic space r e s p e c t i v e l y italic colon$

PhysicsGeneral

General

Physics

$straight A space ball space of space mass space 1 space kg space is space thrown space up space with space an space initial space speed space of space 4 space straight m divided by straight s. space straight A space second space ball space of space mass space 2 space kg space is space released space from space rest space from space some space height space as space shown space in space figure. space Choose space the space correct space statement left parenthesis straight s right parenthesis.$

PhysicsGeneral

General

Physics

$straight A space man space is space standing space on space straight a space plank space which space is space placed space on space smooth space horizontal space surface. space There space is space sufficient space friction space between space feet space of space man space and space plank. space Now space man space starts space running space over space plank comma space correct space statement space is divided by are$

PhysicsGeneral

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Physics

$In space the space figure space shown. space find space out space centre space of space mase space of space straight a space system space of space straight a space uniform space circular space plate space of space radius space 3 straight R space from space straight O space in space which space straight a space hole space of space radius space straight R space in space cut space whose space center space is space at space 2 straight R space distance space from space the space centre space of space large space circular space plate$

PhysicsGeneral

General

Physics

$straight A space block space of space mass space straight m space rests space on space straight a space stationary space wedge space of space mass space straight M. space The space wedge space can space slide space freely space on space straight a space smooth space horizontal space surface space as space shown space in space figure. space If space the space block space starts space from space rest$

PhysicsGeneral

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Physics

$straight A space car space of space mass space 500 space kg space left parenthesis including space the space mass space of space straight a space block right parenthesis space is space moving space on space straight a space smooth space road space with space velocity space 1.0 space ms to the power of negative 1 end exponent space space along space positive space straight x space minus axis. space Now space straight a space block space of space mass space 25 space kg space is space thrown space outside space with space space absolute space velocity space of space space space 20 space ms to the power of negative 1 end exponent space along space positive space straight z space minus axis. space The space new space velocity space of space the space car space is space open parentheses m s to the power of negative 1 end exponent close parentheses$

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Physics

$From space the space circular space disc space of space radius space 4 straight R space two space small space discs space of space radius space straight R space are space cut space off. space The space centre space of space mass space of space the space new space structure space will space be space at$

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Physics

$The space net space force space acting space on space straight a space particle space moving space along space straight a space straight space line space varies space with space time space as space shown space in space the space diagram. space Force space is space parallel space to space velocity. space Which space of space the space following space graph space is space best space representative space of space speed space with space time ? space left parenthesis Initial space velocity space of space the space particle space is space zero right parenthesis$

PhysicsGeneral

General

Physics

$straight A space man space of space mass space straight M space stands space at space one space end space of space straight a space stationary space plank space of space length space straight L comma space lying space on space straight a space smooth space surface. space The space man space walks space to space the space other space end space of space the space plank. space If space the space mass space of space the space plank space is space straight M divided by 3 comma space the space distance space that space the space man space moves space relative space to space the space ground space is$

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