Kinematics Concepts Flashcards

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Questions and Answers

What is Kinematics?

The exploration of quantum mechanics.

The analysis of forces.

The study of energy.

The science of describing the motion of objects. (correct)

Define Scalars.

Quantities that are fully described by magnitude alone.

Define Vectors.

Quantities that are fully described by both a magnitude and a direction.

What does Distance measure?

How much ground an object has covered during its motion. Signup and view all the answers

Define Displacement.

How far out of place an object is. Signup and view all the answers

What is Speed?

How fast an object is moving. Signup and view all the answers

Define Velocity.

The rate at which an object changes its position. Signup and view all the answers

What is Acceleration?

The rate at which an object changes its velocity. Signup and view all the answers

Constant acceleration is when the velocity is changing by a constant amount each ______.

second Signup and view all the answers

What is Position?

The location of an item. Signup and view all the answers

Define Mass.

A measure of the inertia of an object. Signup and view all the answers

What is meant by the magnitude of acceleration due to gravity?

The acceleration due to the pull of gravity, denoted by 'g'. Signup and view all the answers

Define Weight.

The force exerted on a mass by a gravitational field. Signup and view all the answers

What is an initial frame of reference?

The first way you look at something and its relationship to the problem. Signup and view all the answers

What is meant by Rate?

A certain quantity or amount considered in relation to a unit of another thing. Signup and view all the answers

Freefall occurs when no forces are acting on an object.

False Signup and view all the answers

Define Significant Figures.

All the nonzero digits of a number and the zeros that are included between them or that signify accuracy. Signup and view all the answers

What is the definition of a Scalar?

A quantity with only magnitude. Signup and view all the answers

What does Magnitude represent?

A size or amount with units. Signup and view all the answers

Define Vector.

A quantity with magnitude and direction. Signup and view all the answers

What is the Tip to Tail method?

A method for finding a resultant vector. Signup and view all the answers

Define Tail in regards to vectors.

The starting point of a vector. Signup and view all the answers

What is the Tip of a vector?

The arrowhead of a vector. Signup and view all the answers

Define Resultant Vector.

The sum of two or more vectors. Signup and view all the answers

What are Components in vector analysis?

The two vectors that are perpendicular to each other. Signup and view all the answers

What does Position indicate?

The location of an object in a given frame of reference. Signup and view all the answers

What is Distance in terms of measurement?

A scalar measurement of the length of a path connecting two points. Signup and view all the answers

Define Speed in a physical context.

A scalar quantity that describes the rate of movement. Signup and view all the answers

What is Instantaneous Speed?

The speed of an object at one exact moment. Signup and view all the answers

Define Average Speed.

The total distance traveled divided by the time taken. Signup and view all the answers

Define Velocity in physics.

A vector quantity that describes the rate of change of position. Signup and view all the answers

What is Average Velocity?

The displacement divided by the time interval needed. Signup and view all the answers

What is Instantaneous Velocity?

The speed and direction an object is moving at one exact moment. Signup and view all the answers

What is Photogate used for?

A device that measures the time an infrared beam is blocked by an object. Signup and view all the answers

What is Acceleration in terms of physics?

A vector quantity that measures the rate of change of velocity. Signup and view all the answers

Study Notes

Kinematics Overview

Kinematics studies motion, employing various descriptors like words, diagrams, numbers, graphs, and equations.
It is a branch of mechanics aimed at creating mental models for explaining the motion of real-world objects.

Scalars and Vectors

Scalars are quantities described solely by a magnitude (numerical value).
Vectors include both magnitude and direction.

Motion Characteristics

Distance is a scalar measuring how much ground an object has covered.
Displacement is a vector indicating the overall change in an object's position, considering both distance and direction.
Speed is a scalar measuring how fast an object moves, defined as the rate of distance covered.
Velocity is a vector that reflects the rate at which an object changes its position.

Acceleration Concepts

Acceleration is a vector quantity representing the rate of change of velocity.
Constant acceleration means velocity changes by a consistent amount each second.

Fundamental Definitions

Position indicates the location of an object within a reference frame.
Mass quantifies an object's inertia; greater mass means more resistance to motion.
Weight is the force exerted on an object by gravity.

Reference and Measurement

The initial frame of reference is the starting point for viewing an object's relation to a problem.
Rate compares a certain quantity of one item to a measurement of another.

Forces and Motion Dynamics

Freefall occurs when gravity is the only acting force on an object.
Magnitude of acceleration due to gravity, denoted as 'g', reflects this acceleration.

Significant Figures

Significant figures involve all non-zero digits and zeros that indicate precision.

Vector Representation

The tip-to-tail method is used to find a resultant vector by connecting the tail of one vector to the tip of another.
Resultant vectors represent the sum of multiple vectors.
Components are perpendicular vectors that, when combined, reconstruct the original vector.

Additional Key Terms

Instantaneous speed refers to the speed of an object at a specific moment in time.
Average speed is calculated by dividing total distance by total time.
Average velocity is the ratio of displacement to the time taken for that displacement.
Instantaneous velocity combines speed and direction at a single moment.

Measurement Devices

A photogate is a device that records the time an object blocks an infrared beam, useful for motion studies.

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Description

This quiz covers essential concepts in kinematics, including definitions and examples of key terms like kinematics and scalars. Enhance your understanding of motion by exploring these flashcards that summarize important principles in mechanics.