如圖,在△ABC中,∠B=90,∠C=30°,AB=6cm,BC=6
cm,動(dòng)點(diǎn)P從點(diǎn)B開(kāi)始沿邊BA、AC向點(diǎn)C以3cm/s的速度移動(dòng),動(dòng)點(diǎn)Q從點(diǎn)B開(kāi)始沿邊BC向點(diǎn)C以
cm/s的速度移動(dòng),動(dòng)點(diǎn)P、Q同時(shí)出發(fā),到點(diǎn)C運(yùn)動(dòng)結(jié)束.設(shè)運(yùn)動(dòng)過(guò)程中△BPQ的面積為y(cm
2),運(yùn)動(dòng)時(shí)間為t(s).
(1)點(diǎn)P運(yùn)動(dòng)到點(diǎn)A,t=
2
2
(s);
(2)請(qǐng)你用含t的式子表示y.