Motion with air resistance - 题库网 (tiku.one)

标记此题

1#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

96.09: When a falling object reaches terminal veev8j:pu3aqbq0,9w 9e; o z8tavheuj : e8o p8jlocity, it:

A. is no longer subject to the friction of air.

B. moves downward with constant velocity.

C. has an acceleration of approximately $10\;m/s^{2}$

D. has no downward velocity.

E. has an upward acceleration.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

99.07: In the absence of air resistanv j4zpo8n7z/2vxl , szce, if an object were to fall freely near the surface of the Moonvzvp2sjn7 ,xo 4zz/ l8,

A. its velocity could never exceed 10 m/s.

B. its acceleration would gradually decrease until the object moves with a terminal velocity.

C. the acceleration is constant.

D. it will fall with a constant speed.

E. the acceleration is zero.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

99.09: If air resistance can be neglected, what happe / ke/uz wi5zex+1z:dfns to the horizontal velocity component of a basketball as zudz:1if/e5 k/zwxe +it is thrown to the basket from the free-throw line?

A. increases

B. decreases

C. decreases until the ball reaches the top then increases as the ball comes down

D. increases until the ball reaches the top then decreases as the ball comes down

E. remains constant

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

98.13: When a falling object moves with be:vgqtck4bye1 -hcq194c7 w terminal velocity, it

A. has zero velocity.

B. has zero acceleration.

C. has an upward acceleration.

D. is no longer subject to air resistance.

E. has an acceleration of approximately 10 $m/s^{2}$ .

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.08: Why do raindrops fall with constant speed during the later stau5ws;a 8idht:/yeng;syi0 n+f a2(f nges of their dnyyifgdu+ahnsst (;na5:e w08i; /f 2escent?

A. The gravitational force is the same for all drops.

B. All drops fall from the same height.

C. The gravitational force is negligible for objects as small as raindrops.

D. The gravitational force cannot increase the speed of a falling object to more than 9.8 m/s.

E. Air resistance balances the gravitational force on a drop.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.14: An astronaut on the Moon simultaneously drops a feather a7xyx(q8 y,lhgt r( t(qa,z2fl p t7kc/o /aym9nd a hammer. The factxa/txh /a7,fqq( otlr 8 y9y(gtklzm, p2cy7( that they
reach the surface at the same instant shows that

A. no gravity forces act on a body in a vacuum.

B. the acceleration due to gravity on the Moon is less than the acceleration due to gravity on the Earth.

C. the gravitational force from the Moon on heavier objects (the hammer) is equal to the gravitational force on lighter objects (the feather).

D. a hammer and feather have less mass on the Moon than on Earth.

E. in the absence of air resistance all bodies at a given location fall with the same acceleration.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

账号		自动登录	找回密码
密码			立即注册

未使用图片

本次作答已使用