Velocity-time graph’s Speed and Velocity Speed Velocity Velocity-time graph’s Questions

Velocity-time graph’s Speed Speed tells you how far an object has moved in a curtain time, for example, If your going 20km/h you will travel: 20km in an hour 10km in 30 minutes Speed Velocity Velocity-time graph’s Questions

Velocity-time graph’s Speed To work out average speed we use the formula: 𝑠= 𝑑 𝑡 S= speed (m/s) D= distance (m) T= time (s) Speed Velocity Velocity-time graph’s Questions

Velocity-time graph’s Speed Using the formula, 𝑠= 𝑑 𝑡 we can also calculate distance and time. 𝑑=𝑠×𝑡 𝑡= 𝑑 𝑠 Speed Velocity Velocity-time graph’s Questions

Velocity-time graph’s Velocity is the same as speed but it has a direction, for example: These cars have the same speed but different velocity's as they are traveling in different directions. Speed Velocity Velocity-time graph’s Questions 20km/h 20km/h

Velocity-time graph’s Distance-time graph 500 400 300 200 100 Speed Velocity Velocity-time graph’s Questions Distance (m) 0 10 20 30 40 50 Time(s) This graph shows us - 1) How far something has travelled - 2) How long it took to travel that distance

Velocity-time graph’s Distance-time graph 500 400 300 200 100 Speed Velocity Velocity-time graph’s Questions Distance (m) 0 10 20 30 40 50 Time(s) Using the 2 things that the graph shows us we can calculate speed. We do this using the gradient: 𝑠= 500 50 𝑠= 𝑑 𝑡 =10m/s

Velocity-time graph’s Question time What is the difference between speed and velocity? If a car is traveling at 80km/h, how far will it get it 45 minuets? If a car goes round a corner at a constant speed why is its velocity still changing? Speed Velocity Velocity-time graph’s Questions