Physics Chapter 5: Friction and Drag

<p>It decreases (A)</p> Signup and view all the answers

<p>It inversely affects the change in length (A)</p> Signup and view all the answers

<p>The ratio of force to unit area (B)</p> Signup and view all the answers

<p>The change in length is generally the same for both tension and compression (D)</p> Signup and view all the answers

<p>ΔL is directly proportional to L0 (D)</p> Signup and view all the answers

<p>Change in length divided by the original length (D)</p> Signup and view all the answers

<p>∆x = F/(S*A) (D)</p> Signup and view all the answers

<p>It increases the curvature and shear component of stress. (A)</p> Signup and view all the answers

<p>Attractive forces in solids and liquids resist compression. (A)</p> Signup and view all the answers

<p>The ratio of volume change to pressure applied (D)</p> Signup and view all the answers

<p>Deep ocean pressures on marine structures (B)</p> Signup and view all the answers

<p>Static friction (A)</p> Signup and view all the answers

<p>It increases due to higher shear forces. (D)</p> Signup and view all the answers

<p>The net force is zero. (B)</p> Signup and view all the answers

<p>It is proportional to the object's velocity. (B)</p> Signup and view all the answers

<p>The deformation is linear and proportional to the force. (D)</p> Signup and view all the answers

<p>$𝑚𝑔 = 𝐹𝑑$ (C)</p> Signup and view all the answers

<p>The material's original shape is restored once the force is removed. (A)</p> Signup and view all the answers

<p>It refers to the maximum stress a material can withstand before permanent deformation. (B)</p> Signup and view all the answers

<p>$𝐹_d = \frac{1}{2} C \rho A v^2$ (B)</p> Signup and view all the answers

<p>Higher viscosity increases the drag force on the object in a fluid. (C)</p> Signup and view all the answers

The amount a material changes in length when a force is applied.

A material's ability to resist stretching or compression.

Force per unit area.

A measure of a material's stiffness.

Stretching force applied to a material.

Squeezing force applied to a material.

The area of a material's cross-section.

The length of a material before any force is applied.

A material property that describes a material's resistance to shear deformation.

Deformation that occurs perpendicular to the applied force.

A material property that describes a material's resistance to uniform compression.

Forces acting sideways on the spinal column, increasing the risk of back injury.

The maximum force that can be exerted on an object without causing it to move (static friction).

The force that resists the start of motion between two static surfaces in contact.

The constant velocity reached by a falling object when the drag force equals the gravitational force.

The air resistance on a falling object caused by the air pushing against it.

Describes the drag force on small objects moving slowly in a viscous fluid.

Change in shape of an object due to a force, but it returns to its original shape when the force is removed.

For small deformations, the force is proportional to the deformation.

Drag force is directly proportional to the square of the velocity and is calculated using the formula: 1/2 * C * ρ * A * v^2.

The maximum stress a material can withstand before breaking or fracturing.

To maintain a constant velocity, the driving force must equal the sum of drag and friction.