高中物理必修二曲线运动练习题.docVIP

高中物理必修二曲线运动练习题 高中物理必修二曲线运动单元练习题 一、选择题 1,做平抛运动的物体,每秒的速度增量总是，， A,大小相等,方向相同 B,大小不等,方向不同 C,大小相等,方向不同 D,大小不等,方向相同 2,关于运动的性质,以下说法中正确的是，， A,曲线运动一定是变速运动 B,变速运动一定是曲线运动 C,曲线运动一定是变加速运动 D,物体加速度大小、速度大小都不变的运动一定是直线运动 2,关于从同一高度以不同初速度水平抛出的物体,比较它们落到水平地面上的时间，不计空气阻力，, 以下说法正确的是，， A,速度大的时间长 B,速度小的时间长 C,一样长 D,质量大的时间长 3,关于运动的合成和分解,下列说法正确的是，， A,合运动的时间等于两个分运动的时间之和 B,匀变速运动的轨迹可以是直线,也可以是曲线 C,曲线运动的加速度方向可能不速度在同一直线上 D,分运动是直线运动,则合运动必是直线运动 5,甲、乙两物体都做匀速圆周运动,其质量之比为1?2,转动半径之比为1?2,在相等时间里甲转 过60?,乙转过45?,则它们所受外力的合力之比为，， A,1?4 B,2?3 C,4?9 D,9?16 should be dealt with by the personnel Department of the company. (3) personal injury accident occurs, the direct punishment 500-1000, who is directly responsible for the accident responsibility, give notice of criticism and 50-100 economic sanctions against them. (4) to conceal the accident, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. (5) significant near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and quality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pressure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipme