# P2(i) - Forces and Motion 2.

Different fundamental patterns, rules and tips, exploring-

- Electricity
- Magnetism
- Earth & Space
- Light
- Sound

- Created by: Alice Ugg-Boots
- Created on: 23-05-11 19:23

**D-T and V-T Graphs.**

**Distance - Time Graphs.**

The **vertical axis** of a distance-time graph is the **distance travelled** from the **start**.

The **horizontal axis** of a distance-time graph is the **time taken** from the **start**.

**Very Important Notes.**

1) **Gradient** = **Speed**.

2) **Flat sections** are where it's **stopped**.

3) The **steeper** the **graph** the **faster** it's going.

4) **Downhill sections** mean it's going **back towards** it's **starting point**.

5) **Curves** represent **acceleration** or **deceleration**.

6) A **steepening curve** means it's **speeding up** (**increasing gradient**).

7) A **leveling off curve** means it's **slowing down** (**decreasing gradient**).

**Calculating Speed from a Distance-Time Graph - It's Just the Gradient.**

The **blue line** is **steeper** than the **red** because it represents an **object moving faster** than the one represented by the red line. The red line represents a **typical journey** where an **object returns to the start again**. The **line** representing the return journey **slopes downward**.

When an object moves in a **straight line** at a **steady speed**, you can calculate its speed if you know how far it **travels** and how **long it takes**. This equation…

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