26.如圖,點(diǎn)A在數(shù)軸上所對(duì)應(yīng)的數(shù)為-2.
(1)點(diǎn)B在點(diǎn)A右邊,距A點(diǎn)4個(gè)單位長度,求點(diǎn)B所對(duì)應(yīng)的數(shù);
(2)在(1)的條件下,點(diǎn)A以每秒2個(gè)單位長度的速度沿?cái)?shù)軸向左運(yùn)動(dòng),同時(shí)點(diǎn)B以每秒2個(gè)單位長度的速度沿?cái)?shù)軸向右運(yùn)動(dòng),當(dāng)點(diǎn)A運(yùn)動(dòng)到-6所在的點(diǎn)處時(shí),求A,B兩點(diǎn)間距離.
(3)在(2)的條件下,現(xiàn)A點(diǎn)靜止在-6處不動(dòng),B點(diǎn)沿?cái)?shù)軸向左運(yùn)動(dòng)時(shí),經(jīng)過多長時(shí)間A,B兩點(diǎn)相距4個(gè)單位長度.