Multiple Choice
In the context of types of forces and free-body diagrams, which quantity is defined as a measure of the force of gravity on an object?
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6. Intro to Forces (Dynamics)
Types Of Forces & Free Body Diagrams
Multiple Choice
In the context of types of forces and free-body diagrams, air resistance is best classified as what type of frictional force?
A
Fluid friction (drag)
B
Rolling friction
C
Kinetic friction between solid surfaces
D
Static friction
Verified step by step guidance1
Step 1: Understand the different types of frictional forces. Static friction acts between surfaces that are not moving relative to each other, kinetic friction acts between solid surfaces sliding past each other, rolling friction occurs when an object rolls over a surface, and fluid friction occurs when an object moves through a fluid (liquid or gas).
Step 2: Recognize that air resistance is a force that opposes the motion of an object moving through air, which is a fluid (a gas).
Step 3: Since air is a fluid, the frictional force caused by air resistance is classified as fluid friction, also known as drag.
Step 4: Recall that fluid friction differs from solid friction because it involves the interaction between an object and a fluid medium, rather than two solid surfaces in contact.
Step 5: Conclude that air resistance is best classified as fluid friction (drag) because it arises from the object's motion through the air, a fluid.
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