選修物理I-3-3~3-4
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Easy
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5 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖所示,有一傾角為30°的光滑固定斜面,斜面長L為10m,一小球從斜面頂端以v0 = 10m/s的速度沿水平方向拋出,試求小球滑到斜面底端時的水平位移S為多少m?(重力加速度量值為10m/s2)
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25
2.
MULTIPLE SELECT QUESTION
10 mins • 1 pt
甲、乙兩球位於同一鉛直線上,其高度分別為h1 = 10.0m、h2 = 8.2m,如圖所示,將甲、乙兩球分別以v1及v2的初速度沿同一水平方向拋出。若v1 = 10.0m/s,且甲球拋出後1s,恰好在P點與乙球相撞,則乙球必須在何時以多大的v2拋出?(應選兩項,重力加速度量值為10m/s2)
乙球必須與甲球同時拋出
乙球必須在甲球拋出後0.6s拋出
乙球必須在甲球拋出後0.2s拋出
乙球的初速度v2必須為12.5m/s
乙球的初速度v2必須為25.0m/s
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖所示,一物體在傾斜角θ之光滑斜面上以與鉛直線成2θ之夾角,v0之初速,斜向拋出一球,重力加速度量值為g,且斜面極長,球可落在斜面上,則自拋出至落回斜面歷時多久?
2V₀/g
2V₀sinθ/g
2V₀cosθ/g
V₀sinθcosθ/g
2V₀sinθcosθ/g
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖所示,一球由斜角θ的長斜面以初速度v0拋出,方向與斜面垂直,且最後落回斜面。若重力加速度量值為g,則球飛行全程的平均速度量值為何?
v₀tanθ
v₀/tanθ
2v₀²tan²θ/g
v₀sinθ
v₀cosθ
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖,兩斜面均為光滑斜面,且高度均為45m。其傾斜角各為53°及37°,一鋼珠以某初速自左側斜面底端上滑,通過頂點後作斜向拋射,重力加速度量值為10m/s2。若鋼珠恰落到右側斜面底端處,則鋼珠的初速度為10倍根號多少m/s?
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