The drawing shows a collision between two pucks on an air$-$hockey table. Puck A has a mass of $0\mathrm{.}0200$ kg and is moving along the $x$ axis with a velocity of $+5\mathrm{.}74\frac{m}{s}.$ It makes a collision with puck $B,$ which has a mass of $0\mathrm{.}0400$ kg and is initially at rest. The collision is not head$-$on$.$ After the collision, the two pucks fly apart with the angles shown in the drawing. Find the speed of $($a$)$ puck A and $($b$)$ puck B$.$

$($a$)$ Number

Units

$($b$)$ Number

Units

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