本题目来源于试卷: Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.29: An object is thrown upwards8omas v1riz18 jwz*ka lthb2w- )jxyg.6j /oj6*f-c hdve +i:with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of thyijgw +*:kt cfwla6x6* v-o j)b -2dh.j /jzehe displacement, velocity and acceleration?
displacement velocity acceleration
A. displacement ~ up; velocity ~ up; acceleration ~ up
B. displacement ~ up; velocity ~ up; acceleration ~ down
C. displacement ~ up; velocity ~ down; acceleration ~ down
D. displacement ~ up; velocity ~ down; acceleration ~ up
E. displacement ~ down; velocity ~ down; acceleration ~ down
参考答案: B
本题详细解析:
暂无
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