DISTANCE-TIME GRAPHS Plotting distance against time can tell you a lot about motion. Let's look at the axes:
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1 Motion Graphs Notes Describing the motion of an object is occasionally hard to do with words. Sometimes help make motion easier to picture, and therefore understand. Remember: Motion. Speed. Velocity. Acceleration. DISTANCE-TIME GRAPHS Plotting distance against time can tell you a lot about motion. Let's look at the axes: is always plotted on the (bottom of the graph). The further to the right on the axis, the longer the time from the start. is plotted on the (side of the graph). The higher up the graph, the further from the start. If an object is, a is shown on a distance-time graph. Time is increasing to the right, but its distance does not change. It is not moving. We say it is. If an object is moving at a constant speed, it means it has the : Time is increasing to the right, and distance is increasing constantly with time. The object moves at a.
2 Let s look at two moving objects: Both of the lines in the graph show that each object moved the same distance, but the : A indicates a larger distance moved in a given time. In other words,. Both lines are, so both speeds are. Graphs that show acceleration look different from those that show constant speed. The line on this graph is. This shows an, since the line is getting steeper: In other words, in a given time, the distance the object moves is change (getting larger). It is.
3 Summary: A distance-time graph tells us how far an object has moved with time. The the graph, the the motion. A means the object is not changing its position - it is, it is at rest. A line means the object is to the start.
4 Examine the graphs below. started 10 yards further ahead of the other? Which of the graphs shows that one of runners started 10 yards further ahead of the other? Explain your answer. In
5 In which of the following graphs below are both runners moving at the same speed? Explain your answer.
6 The distance-time graphs below represent the motion of a car. Match the descriptions with the graphs. Explain your answers. Descriptions: 1. The car is stopped. 2. The car is traveling at a constant speed. 3. The speed of the car is decreasing. 4. The car is coming back. Graph A matches description because. Graph B matches description because. Graph C matches description because. Graph D matches description because.
7 SPEED-TIME GRAPHS Speed-Time graphs are also called Velocity-Time graphs. Speed-Time graphs look much like Distance-Time graphs. Be sure to read the labels!! is plotted on the. Speed or velocity is plotted on the Y-axis. A straight on a speedtime graph means that. It is not changing over time. A straight line mean that the object is not moving! This graph shows increasing speed. The moving object is. This graph shows decreasing speed. The moving object is.
8 What about comparing two moving objects at the same time? Both the dashed and solid line show increasing speed.. The dashed line shows a. Summary: A speed - time graph shows us how the speed of a moving object changes with time. The the graph, the. A means the object is moving at a. A line means the object is.
9 The speed-time graphs below represent the motion of a car. Match the descriptions with the graphs. Explain your answers. Descriptions: 5. The car is stopped. 6. The car is traveling at a constant speed. 7. The car is accelerating. 8. The car is slowing down. Graph E matches description because. Graph F matches description because. Graph G matches description because. Graph H matches description because.
10 Questions: Look at the graph above. It shows how three runners ran a 100-meter race. 1. Which runner won the race? Explain your answer. 2. Which runner stopped for a rest? Explain your answer. 3. How long was the stop? Explain your answer. 4. How long did Bob take to complete the race? Explain your answer. 5. Calculate Albert s average speed. (Figure the distance and the time first!)
11 The graph below shows how the speed of a bus changes during part of a journey Choose the correct words from the following list to describe the motion during each segment of the journey to fill in the blanks. accelerating decelerating constant speed at rest Segment 0-A The bus is. Its speed changes from 0 to 10 m/s in 5 seconds. Segment A-B The bus is moving at a of 10 m/s for 5 seconds. Segment B-C The bus is. It is slowing down from 10 m/s to rest in 3 seconds. Segment C-D The bus is. It has stopped. Segment D-E The bus is. It is gradually increasing in speed.
Motion Graphs. Plotting position against time can tell you a lot about motion. Let's look at the axes:
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Motion Graphs 1 _ Motion Graphs Describing the motion of an object is occasionally hard to do with words. Sometimes graphs help make motion easier to picture, and therefore understand. Remember: Motion
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