Which one or more of the following quantities are forces?

选项

A.a. Strain

B.b. Normal Force

C.c. Displacement Force

D.d. Dynamic Friction Force

E.e. Acceleration Force

F.f. Gravitational Force

G.g. Speed Force

H.h. Gravitational acceleration

I.i. Velocity Force

J.j. Tension Force

K.k. Static Friction Force

查看解析

标准答案

Please login to view

思路分析

Let’s break down each option to determine whether it represents a force in physics. Option a: Strain. Strain is a measure of deformation in a material, not a force itself. It describes how much an object is stretched or compressed, but does not represent a push or pull. Option b: Normal Force. The normal force is the contact force exerted by a surface perpendicular to the surface. It is a classic example of a force and is indeed a force acting on objects. Option c: Displacement Force. T......Login to view full explanation