题目

MUF0121 Physics Unit 1 - Semester 2, 2025 5.8 Application of forces

多项选择题

Which one or more of the following quantities are forces?

选项

A.a. Displacement Force

B.b. Static Friction Force

C.c. Speed Force

D.d. Dynamic Friction Force

E.e. Tension Force

F.f. Normal Force

G.g. Gravitational acceleration

H.h. Strain

I.i. Acceleration Force

J.j. Velocity Force

K.k. Gravitational Force

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标准答案

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思路分析

Let’s break down what the question is asking: which items are forces, among the listed concepts. Option a: Displacement Force. In physics, displacement is a vector quantity describing a change in position; it is not a force itself. Therefore this option describes a quantity that is not a force, and the term as stated is not standard for a force. Option b: Static Friction Force. Friction in general is a contact force that resists relative motion between surfaces. Static friction is the force that prevents motion when objects are at rest relative to each other; since it is a contact force arising from interfacial interactions, it quali......Login to view full explanation