Speed, Velocity, and Acceleration

Front

Speed Noun

---

[speed]

Back

Speed

---

The measure of the distance an object travels in a specific unit of time, without regard to direction.

---

Example: A car moving along a road shows how speed is calculated as distance divided by time.

Front

Rate Noun

---

[rayt]

Back

Rate

---

A measure of how much a quantity changes over a specific period of time or per unit of another quantity.

---

Example: A speedometer shows how fast a car is moving, measuring speed in kilometers per hour.

Front

Instantaneous Speed Noun

---

[in-stun-tay-nee-us speed]

Back

Instantaneous Speed

---

The exact speed of a moving object at a specific moment or instant in time.

---

Example: A speedometer reading shows the instantaneous speed of a vehicle at a specific moment.

Front

Average Speed Noun

---

[av-er-ij speed]

Back

Average Speed

---

The total distance an object travels divided by the total amount of time it takes to travel that distance.

---

Example: A car travels 8 km along a winding road, but its displacement is only 2 km straight from start to end.

Front

Slope Noun

---

[slohp]

Back

Slope

---

The measure of the steepness of a line on a graph, calculated as the rise divided by the run.

---

Example: The image shows a line on a graph, demonstrating slope as the steepness between two points.

Front

Variable Noun

---

[vair-ee-uh-buhl]

Back

Variable

---

A letter or symbol used in mathematics and science to represent a quantity that can change or vary.

---

Example: An equation showing 'y = 4x' illustrates dependent and independent variables, helping students understand how variables represent changing quantities.

Front

Velocity Noun

---

[vuh-los-i-tee]

Back

Velocity

---

The rate at which an object changes its position, specifying both its speed and its direction of motion.

---

Example: A ball is pushed by a spring, showing its velocity as it moves in a specific direction.

Front

Acceleration Noun

---

[ak-sel-uh-rey-shuhn]

Back

Acceleration

---

The rate at which an object's velocity changes over time, including changes in speed, direction, or both.

---

Example: The image shows forces acting on an object, demonstrating how acceleration changes with force.

Front

Deceleration Noun

---

[dee-sel-uh-rey-shuhn]

Back

Deceleration

---

A type of acceleration that involves a decrease in an object's speed, often referred to as negative acceleration.

---

Example: A car slowing down and stopping shows deceleration, as the speed decreases.

Front

Force Noun

---

[fors]

Back

Force

---

A push or a pull exerted on an object that can cause it to change its state of motion.

---

Example: A person pushing a box shows how force is a push that can move an object.

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