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6.一跳傘員在時刻t =0時,由停留於空中定點的直昇機上跳落,等了幾秒鐘後才打開降落傘。下表為跳傘員鉛直下落的速度與時間的關係,則降落傘在什麼時候打開?(重力加速度g=10公 尺/秒 2) (A)2秒
問題詳情
6.一跳傘員在時刻t =0時,由停留於空中定點的直昇機上跳落,等了幾秒鐘後才打開降落傘。下表為跳傘員鉛直下落的速度與時間的關係,則降落傘在什麼時候打開?(重力加速度g=10公 尺/秒 2)
(A)2秒到3秒之間
(B)3秒到4秒之間
(C)4秒到5秒之間
(D)5秒到6秒之間
(E)6秒到7秒之間。
參考答案
答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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