2.如圖,已知△ABC中,AB=AC=9cm,∠B=∠C,BC=6cm,點(diǎn)D為AB的中點(diǎn).
(1)若點(diǎn)Q的運(yùn)動(dòng)速度與點(diǎn)P的運(yùn)動(dòng)速度相等為1.5cm/s,經(jīng)過(guò)1秒后,△BPD與△CQP是否全等,請(qǐng)說(shuō)明理由;
(2)若點(diǎn)Q的運(yùn)動(dòng)速度與點(diǎn)P的運(yùn)動(dòng)速度不相等,當(dāng)點(diǎn)Q的運(yùn)動(dòng)速度為多少時(shí),能夠使△BPD與△CQP全等?