A $43$ gg marble moving at $2\mathrm{.}2$ m$/$sm$/$s strikes a $28$ gg marble at rest. Assume the collision is perfectly elastic and the marbles collide head$-$on$.$

Part A

What is the speed of the first marble immediately after the collision?

Express your answer with the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

v$1$v$1=$

nothingnothing

SubmitRequest$$Answer

Part B

What is the speed of the second marble immediately after the collision?

Express your answer with the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

v$2$v$2=$

nothingnothing