【題目】如圖,該曲線表示一人騎自行車離家的距離與時(shí)間的關(guān)系.騎車者9時(shí)離開(kāi)家,15時(shí)回家.根據(jù)這個(gè)曲線圖,請(qǐng)你回答下列問(wèn)題:

(1)最初到達(dá)離家最遠(yuǎn)的地方是什么時(shí)間?離家多遠(yuǎn)?

(2)何時(shí)開(kāi)始第一次休息?休息多長(zhǎng)時(shí)間?

(3)第一次休息時(shí),離家多遠(yuǎn)?

(4)11001200他騎了多少千米?

(5)他在900100010001030的平均速度分別是多少?

(6)他在哪段時(shí)間里停止前進(jìn)并休息用午餐?

【答案】(1) 12時(shí) 30千米

(2) 10:30 半小時(shí);

(3) 17千米;

(4) 13千米

(5) 10千米/時(shí) 14千米/時(shí);

(6) 12時(shí)到13時(shí)

【解析】解:(1)最初到達(dá)離家最遠(yuǎn)的地方的時(shí)間是12時(shí),離家30千米.

(2)1030開(kāi)始第一次休息,休息了半小時(shí).

(3)第一次休息時(shí),離家17千米.

(4)11001200他騎了13千米.

(5)9001000的平均速度是10千米/時(shí);10001030的平均速度是14千米/時(shí).

(6)12時(shí)到13時(shí)停止前進(jìn),并休息用午餐較為符合實(shí)際情形.

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