Speed & D-T Graph 8-26-19

Speed A measure of how fast something moves a particular distance over a certain amount of time. V=d/t v=Speed/Velocity d=Distance t=Time

Speed SPEED DOES NOT MEAN YOU ARE MOVING FAST. We can determine speed in several ways. A word problem (Ex. Patrick walks 25 m in 5 seconds what is his speed?) Collecting data and measuring both distance and time Distance-Time Graph

Velocity Velocity can be positive or negative. Velocity MUST have a direction. You use the EXACT SAME FORMULA to find velocity that you do speed.

Acceleration The rate at which velocity changes Acceleration occurs when: An object changes speed (going faster or slower) An object changes direction Acceleration = Final Speed – Initial Speed Time

Distance Time-Graph A graph that represents the speed of an object based on the distance the object moves and the time it takes to move.

Distance Time Graph You can determine: Average Speed (Total Distance ÷ Total Time) If the object moves at a constant speed Speed for a specific part of the journey Total Distance Traveled Displacement

In what section are they traveling the fastest?

Slope

Slope

Slope

Create a distance time graph using the data in the t-chart below. Distance 5 m 10 m 15 m 20m 20 m 30 m 40m 50m 60 m Time 1 s 2 s 3 s 4 s 5 s 6 s 7 s 8 s 9 s 10 s