大学MOOC EssentialUniversityPhysics(苏州大学)1462933164 最新慕课完整章节测试答案
Chap1TranslationalMotion
文章目录
test1.TranslationalMotion
1、单选题：
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
答案: 【 x-component>0，y-component>0】
2、单选题：
选项：
A: piont P
B: piont Q
C: point R
D: point S
答案: 【 piont P】
3、单选题：
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). 】
4、单选题：
选项：
A: 
B: 
C: 
D: 
答案: 【 】
5、单选题：
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.
答案: 【 The object is speeding up at a decreasing rate.】
6、单选题：
选项：
A: at a point between the launch point and the high point of the trajectory.
B: at the high point of the trajectory.
C: at a point between the high point of the trajectory and where it hits the ground.
D: misleading question — the acceleration is the same (but nonzero) at all points along the trajectory
答案: 【 misleading question — the acceleration is the same (but nonzero) at all points along the trajectory 】
7、单选题：
选项：
A: speeding up and following a curved path.
B: speeding up and moving in a straight line.
C: slowing down and following a curved path.
D: slowing down and moving in a straight line.
答案: 【 speeding up and following a curved path. 】
8、单选题：
选项：
A: greater than the downward force of gravity.
B: equal to the force of gravity.
C: less than the force of gravity.
D: any of the above, depending on the speed of the elevator.
答案: 【 equal to the force of gravity.】
9、单选题：
选项：
A: the horizontal force that B exerts on A points to the left.
B: the horizontal force that B exerts on A points to the right.
C: B exerts no horizontal force on A.
D: not enough information given to decide
答案: 【 B exerts no horizontal force on A. 】
10、单选题：
选项：
A: T = w2
B: T > w2
C: T < w2
D: not enough information given to decide
答案: 【 T < w2 】
11、单选题：
选项：
A: the sled will keep moving in a circle.
B: the sled will move on a curved path, but not a circle.
C: the sled will follow a curved path for a while, then move in a straight line.
D: the sled will move in a straight line.
答案: 【 the sled will move in a straight line.】
12、单选题：
选项：
A: the object’s kinetic energy
B: the object’s velocity
C: both of the above
D: none of the above
答案: 【 the object’s kinetic energy 】
13、单选题：
选项：
A: the gravitational force does positive work on it and the gravitational potential energy increases.
B: the gravitational force does positive work on it and the gravitational potential energy decreases.
C: the gravitational force does negative work on it and the gravitational potential energy increases.
D: the gravitational force does negative work on it and the gravitational potential energy decreases.
答案: 【 the gravitational force does positive work on it and the gravitational potential energy decreases. 】
14、单选题：
选项：
A: at x = a
B: at x = b
C: at x = c
D: at x = d
答案: 【 at x = b】
15、单选题：
选项：
A: U = 0 at x = a
B: U is a maximum at x = a.
C: U is a minimum at x = a
D: U is neither a minimum or a maximum at x = a, and its value at x = a need not be zero.
答案: 【 U is a maximum at x = a.】
Chap2RotationalMotion
test2.RotationalMotion
1、单选题：
选项：
A: 20 kg • m/s to the right
B: 20 kg • m/s to the left
C: 4.0 kg • m/s to the right
D: 4.0 kg • m/s to the left
答案: 【 20 kg • m/s to the right】
2、单选题：
选项：
A: in case (i)
B: in case (ii)
C: The impulse is the same in both cases.
D: not enough information given to decide
答案: 【 The impulse is the same in both cases. 】
3、单选题：
选项：
A: the force that the rifle exerts on the bullet
B: the force that the bullet exerts on the rifle
C: both forces have the same magnitude
D: not enough information given to decide
答案: 【 both forces have the same magnitude 】
4、单选题：
选项：
A: the same total momentum and the same total kinetic energy.
B: the same total momentum but less total kinetic energy.
C: less total momentum but the same total kinetic energy.
D: less total momentum and less total kinetic energy.
答案: 【 the same total momentum but less total kinetic energ