PHYSICAL QUANTITIES AND FREE-FALLING BODIES

Flashcards covering key vocabulary and concepts from the lecture notes on physical quantities and free-falling bodies.

Motion

The movement of an object from one position to another with time.

Scalar Quantities

Quantities described with numerical values or magnitude only (e.g., time, speed, mass, temperature).

Vector Quantities

Quantities described with numerical values and direction (e.g., velocity, acceleration, force, weight).

Distance

Total length of the path traveled, following all the turns and/or changes in direction.

Displacement

Straight line path from the starting point directly to the ending point, including the direction of the travel.

Speed

Distance covered per unit time. s=d/t

Velocity

The speed and direction of the motion of an object. v=d/t

Acceleration

When the velocity of an object changes, either due to a change in speed, direction, or both. a = Δv/t

Kinematics

Deals with the analysis of the motion of objects without concern for the forces causing the motion.

Linear Horizontal Motion

Motion in a horizontal plane (e.g., motion of bikes or cars on roads).

Linear Vertical Motion

Motion in a vertical plane (e.g., motion of free-falling objects).

Free-Fall Motion

State when an object is free from all restraints and only acts under the influence of gravity.

Elapsed Time

The time that has passed since the beginning of motion.

Acceleration due to gravity (g)

9.8 m/s^2