CIE A Level Physics復習筆記2.1.4 Gradient of a Displacement-Time Graph

Category: A-level課程, 教材筆記, 福利干貨 Date: 2022年8月16日上午10:59

Gradient of a Displacement-Time Graph

Displacement-time graphs show the changing position of an object in motion
They also show whether an object is moving forwards (positive displacement) or backwards (negative displacement)
- A negative gradient = a negative velocity (the object is moving backwards)
The gradient (slope) of a displacement-time graph is equal to?velocity
- The greater the slope, the greater the velocity

Worked Example

A car driver sees a hazard ahead and applies the brakes to bring the car to rest.What does the displacement-time graph look like? WE - S-T gradient question image, downloadable AS & A Level Physics revision notes

2.1.4-WE-S-T-gradient-answer-image

Exam Tip

Don’t forget that velocity is a vector quantity; it has a size and a direction. If velocity is initially positive and then becomes negative, then the object has changed direction.

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