Which one or more of the following quantities are forces?

选项

A.a. Displacement Force

B.b. Gravitational acceleration

C.c. Speed Force

D.d. Gravitational Force

E.e. Static Friction Force

F.f. Tension Force

G.g. Dynamic Friction Force

H.h. Acceleration Force

I.i. Normal Force

J.j. Velocity Force

K.k. Strain

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标准答案

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思路分析

To tackle the question, first recall what a force is: a push or pull that can cause or change motion, direction, or shape; common examples include gravitational, frictional, normal, tension, and other interaction forces. Option a: Displacement Force. This term is not a standard category of force in physics. Displacement is a measure of position change, not a force; thus this option is not a correct identification of a force. Option b: Gravitational acceleration. Acceleration is the rate of change of velocity, not a force itself. While gravi......Login to view full explanation