A $0\mathrm{.}146$ kgkg glider is moving to the right on a frictionless, horizontal air track with a speed of $0\mathrm{.}900$ m$/$sm$/$s$.$ It has a head$-$on collision with a $0\mathrm{.}302$ kgkg glider that is moving to the left with a speed of $2\mathrm{.}11$ m$/$sm$/$s$.$ Suppose the collision is elastic.

Find the magnitude of the final velocity of the $0\mathrm{.}146$ kgkg glider. A $0\mathrm{.}146$ kg glider is moving to the right on a frictionless, horizontal air track with a speed of $\backslash (0\mathrm{.}900\backslash$mathrm$\{$~m$\}/\backslash$mathrm$\{$s$\}\backslash ).$ It has a head$-$on collision with a $0\mathrm{.}302$ kg glider that is moving to the left with a speed of $\backslash (2\mathrm{.}11\backslash$mathrm$\{$~m$\}/\backslash$mathrm$\{$s$\}\backslash ).$ Suppose the collision is elastic.

Part A

Find the magnitude of the final velocity of the $0\mathrm{.}146$ kg glider.

Express your answer in meters per second.

$\backslash [$

$\backslash$mathrm$\{$m$\}/\backslash$mathrm$\{$s$\}$

$\backslash ]$

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