A mass is moved by a nongravitational force (of unknown magnitude and direction) from point $$\(A\)$$ to point $$\(B\)$$ within a known gravitational field. Which of the following is true?
A.
The change in the object's kinetic energy depends only on its mass and the locations of points \(A\) and \(B\).
B.
The change in the object's kinetic energy depends only on its mass and the path taken between points \(A\) and \(B\).
C.
The change in the object's kinetic energy is equal to the work done by the external force, \(W=\int \mathrm{F} \cdot d \mathbf{r}\).
D.
The total energy (kinetic plus potential) of the mass is constant.
E.
The object's potential energy depends only on its mass and the locations of points \(A\) and \(B\).
Exam No：AP Physics C Unit 7 Questions Set Year：2024 Question No：8
Answer:
B
Knowledge points:
3.3 Conservation of Energy
7.1 Gravitational Forces
Solution:
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