A $44\mathrm{.}0$ gg marble moving at $2\mathrm{.}30$ m$/$sm$/$s strikes a $22\mathrm{.}0$ gg marble at rest. Note that the collision is elastic and that it is a "head$-$on$"$ collision so all motion is along a line.

Part A

What is the speed of $44\mathrm{.}0$ gg marble immediately after the collision?

Express your answer with the appropriate units.

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$($vfx$)44\mathrm{.}0$g$($vfx$)44\mathrm{.}0$g $=$

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Part B

What is the speed of $22\mathrm{.}0$ gg marble immediately after the collision?

Express your answer with the appropriate units.