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Speed and Velocity - Coggle Diagram
Speed and Velocity
Speed
Speed a measure of the distance on object travels per unit of time
You can calculate speed by dividing the distance traveled by the time it took to go that distance.
Constant speed is the rate of change of position in which the same distance is traveled each second
Instantaneous speed is speed at a specific instant in time
Average speed is the total distance traveled divided by total time taken to travel that distance
Velocity: speed and direction of a moving object
Changes in Velocity
Velocity changes when the speed and/or direction of an object changes
Velocity is derived from Latin word velocitas ,meaning swiftness and speed
Representing Velocity
Velocity can be represented by an arrow
Ex: If 2 students are walking at the same speed of 1.5 m/s, but in different directions, they have different velocities. They have the same speed but are going in different directions
Distance-time graphs: Use graphs to show rate and change of speed
You can use graphs to compare different speeds
Slowing down: Slope decrease
Speeding up: Slope of the graph increases, upward curve
Average speed: choose starting and ending point, determine change in distance and time. Substitute the values into the average speed equation.
Stopping: horizontal flat line, indicates no motion
Speed vs. Velocity
Velocity is the speed and direction of a moving object
Speed is the rate which measures how far something travels in a given time