DISTANCETIME GRAPHS DISTANCETIME GRAPHS Work out the speed

DISTANCE-TIME GRAPHS

DISTANCE-TIME GRAPHS Work out the speed for each object shown in the graph! Click to find out the answers! 1. Yellow line 30/10 = 3 m/s 2. Blue Line 20/10 = 2 m/s 3. Pink line 10/10 = 1 m/s z A straight line shows an object moving at a constant speed! z The steeper the line, the faster the object is moving!

STATIONARY OBJECTS! z A flat, horizontal line shows a stationary object!

ACCELERATING OBJECTS z Curved lines show if an object is accelerating or decelerating! z The steeper the line gets the faster the object is moving!

GRAPH QUESTIONS! z 1. What is the speed of the man during the first three seconds? z 2. What is the man doing between 3 and 5 seconds? z 3. Calculate the speed of the man between 5 and 7 seconds. z 4. What is the total distance that he has moved? z 5. Calculate the average speed for the whole journey. Click for answers! • 1. 12/3 = 4 m/s • 2. Stationary • 3. 12/2 = 6 m/s • 4. 24 m • 5. 3. 4 m/s

z Draw a distance-time graph showing your journey to school! z Try to include different gradients to show different speeds. Remember – steep slope is fast, gentle slope slow!! z Try to include rough distances and times at key points on your graph. Sketch a distance -time graph for a parachute jump! Think carefully!!!!

A JOGGING GRAPH! Describe the motion of the jogger in each section of the graph!