2020 20春-普通物理(上)(英文)-须萍-1(苏州大学) 最新满分章节测试答案

文章目录[隐藏]

Chapter 2 Kinematics in one-Dimension test 1
Chapter 3 Kinematics in More Dimensions; Vectors (1) test 2
Chapter 3 Kinematics in More Dimensions; Vectors (2) Test 3
Chapter 4 & 5 Dynamics： Newton’s Laws and Application (2) Chapter 4&5 Test
Chapter 9 Linear Momentum and Collisions (3) Chapter 7~9 Test
Chapter 11 General Rotation (2) Chapter 10~11 Test
Chapter 14 Sound Chapter 12~14 Test

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-02-23到2020-07-03
本篇答案更新状态:已完结

Chapter 2 Kinematics in one-Dimension test 1

1、问题:
选项：
A:point P
B:point Q
C:point R
D:point S
E:not enough information in the graph to decide
答案: 【point P】

2、问题:
选项：
A:piont P
B:piont Q
C:piont R
D:piont S
E:not enough information in the graph to decide
答案: 【piont R】

3、问题:
选项：
A:piont P
B:piont Q
C:piont R
D:piont S
E:not enough information in the graph to decide
答案: 【piont S】

4、问题:You toss a ball straight upward, in the positive direction. The ball falls freely under the influence of gravity. At the highest point in the ball’s motion,
选项：
A: its velocity is zero and its acceleration is zero.
B:its velocity is zero and its acceleration is positive (upward).
C:its velocity is zero and its acceleration is negative (downward).
D:its velocity is positive (upward) and its acceleration is zero.
答案: 【its velocity is zero and its acceleration is negative (downward).】

5、问题:
选项：
A:vx<0; ax=0
B:vx<0; ax>0
C:vx<0; ax<0
D:vx>0; ax>0
E:vx>0; ax<0
答案: 【vx<0; ax<0】

6、问题:
选项：
A:
B:
C:
D:
E:
答案: 【】

7、问题:
选项：
A:
B:
C:
D:
E:
答案: 【】

8、问题:
选项：
A:
B:
C:
D:
E:
答案: 【】

9、问题:
选项：
A:The object is slowing down at a decreasing rate.
B:The object is slowing down at an increasing rate.
C:The object is speeding up at a decreasing rate.
D:The object is speeding up at an increasing rate.
E:The object’s speed is changing at a steady rate.
答案: 【The object is speeding up at a decreasing rate.】

10、问题:You are given the vx–t graph for an object moving along the x-axis with constant acceleration. Which of the following could you not determine from the information given in this graph alone?
选项：
A:the object’s x–acceleration at any time t
B:the object’s x–velocity at any time t
C:the object’s position at any time t
D:more than one of the above
E:misleading question — you could determine all of these from the vx–t graph alone
答案: 【the object’s position at any time t】

11、问题:
选项：
A:For t > 0, the object is never at rest.
B:The object is at rest at t = 0.5 s.
C:The object is at rest at t = 1.0 s.
D:The object is at rest at t = 2.0 s.
E:More than one of B., C., and D. is correct.
答案: 【The object is at rest at t = 1.0 s.】

12、问题:
选项：
A:twice, first moving in the positive x-direction, then moving in the negative x-direction
B:twice, first moving in the negative x-direction, then moving in the positive x-direction
C:only once, moving in the positive x-direction
D:only once, moving in the negative x-direction
E:never
答案: 【never】

Chapter 3 Kinematics in More Dimensions; Vectors (1) test 2

1、问题:What are the x– and y–components of the vector E?
选项：
A:Ex = E cos B, Ey = E sin B
B:Ex = E sin B, Ey = E cos B
C:Ex = –E cos B, Ey = –E sin B
D:Ex = –E sin B, Ey = –E cos B
E:Ex = –E cos B, Ey = E sin B
答案: 【Ex = E sin B, Ey = E cos B】

2、问题:Consider the vectors shown. Which is a correct statement about A+B ?
选项：
A:x–component > 0, y–component > 0
B:x–component > 0, y–component < 0
C:x–component < 0, y–component > 0
D:x–component < 0, y–component < 0
E:x–component = 0, y–component > 0
答案: 【x–component > 0, y–component > 0】

3、问题:Consider the vectors shown. Which is a correct statement about A-B ?
选项：
A:x–component > 0, y–component > 0
B:x–component > 0, y–component < 0
C:x–component < 0, y–component > 0
D:x–component < 0, y–component < 0
E:x–component = 0, y–component > 0
答案: 【x–component < 0, y–component < 0】

4、问题:Which of the following statements is correct for any two vectors A and B ?
选项：
A:the magnitude of vector sum A+B is A + B
B:the magnitude of vector sum A+B is A – B
C:the magnitude of vector sum A+B    is greater than or equal to |A – B|
D:the magnitude of vector sum A+B is greater than the magnitude of A-B
E:the magnitude of vector sum A+B is
答案: 【the magnitude of vector sum A+B    is greater than or equal to |A – B|】

5、问题:Which of the following statements is correct for any two vectors A and B ?
选项：
A:the magnitude of vector subtraction A-B is A – B
B:the magnitude of vector subtraction A-B is A + B
C:the magnitude of vector subtraction A-B is greater than or equal to |A – B|
D:the magnitude of vector subtraction A-B is less than the magnitude of A+B
E:the magnitude of vector subtraction A-B is
答案: 【the magnitude of vector subtraction A-B is greater than or equal to |A – B|】

6、问题:Consider the vectors shown.What are the components of the vector E=A+D ?
选项：
A:Ex = –8.00 m, Ey = –2.00 m
B:Ex = –8.00 m, Ey = +2.00 m
C:Ex = –6.00 m, Ey = 0
D:Ex = –6.00 m, Ey = +2.00 m
E:Ex = –10.0 m, Ey = 0
答案: 【Ex = –8.00 m, Ey = –2.00 m】

7、问题:Consider the vectors shown. What is the dot product C dot D ?
选项：
A:(120 m2 ) cos 78.0°
B:(120 m2 ) sin 78.0°
C:(120 m2 ) cos 62.0°
D:(120 m2 ) sin 62.0°
E:none of these
答案: 【(120 m2 ) cos 62.0°】

8、问题:Consider the vectors shown. What is the cross product A cross C ?
选项：
A:(96.0 m2 ) sin 25.0° k
B:(96.0 m2 ) cos 25.0° k
C:–(96.0 m2 ) sin 25.0° k
D:–(96.0 m2 ) cos 25.0° k
E:none of these
答案: 【–(96.0 m2 ) cos 25.0° k】