Speed, Velocity, and Acceleration | Physics of Motion Explained

The video introduces the concepts of speed, velocity, and acceleration, emphasizing that speed and velocity are different, and acceleration involves more than just speeding up.

Speed is defined as the rate at which something changes its position, represented as distance over time (e.g., miles per hour, meters per second). It covers both instantaneous and average speed.

Velocity is similar to speed but includes a direction, making it a vector quantity. For example, 72 mph east represents velocity, whereas 72 mph is just speed.

Acceleration is the rate at which velocity changes, measured as distance per time per time (or distance per time squared, e.g., meters/second²). Acceleration occurs when speeding up, slowing down (negative acceleration), or changing direction.

The video recaps the definitions: speed is rate of movement, velocity is speed with direction, and acceleration is the rate of change of velocity, which happens when changing speed or direction.