Understanding Distance-Time Graphs in GCSE Physics
Learn to interpret distance-time graphs and calculate speed using gradients. Straight lines indicate constant speeds, flat lines mean stationary, and curved lines represent changing speeds.
00:00:04 This video explains distance-time graphs and how to interpret them. It emphasizes that the gradient of the graph represents the speed of the object.
📏 Distance-time graphs show how far something has traveled in a certain period of time.
📈 The gradient of the line on a distance-time graph represents the speed of the object.
🚴♀️ In the example given, the cyclist traveled a total of 50 meters in 11 seconds.
00:01:09 This video explains distance-time graphs in GCSE Physics, including how to interpret gradients and identify periods of constant speed, stationary, acceleration, and deceleration.
📏 The gradient on a distance-time graph represents speed.
🚶♀️ A flat line indicates stationary position with zero speed.
📈 A steeper line indicates increasing speed and acceleration.
00:02:13 This video explains how to find speed on a distance-time graph using tangents. Straight lines indicate constant speeds, flat lines mean stationary, and curved lines represent changing speeds.
📏 Straight lines on a distance-time graph indicate constant speeds.
⏸️ Flat lines on a distance-time graph represent stationary objects.
🔄 Curved lines on a distance-time graph indicate changing speeds.
00:03:16 Learn how to calculate the gradient of a distance-time graph by dividing the change in distance by the change in time, both for straight lines and curves.
📈 Calculate the gradient of a straight line by dividing the change in distance by the change in time.
🔍 When the point lies on a curve, draw a tangent to the curve at that point and calculate the gradient of the tangent.
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