# Physics Unit 2a (P2): Velocity and Distance Time Graphs

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- Created by: cuteangelC99
- Created on: 12-02-16 18:42

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- Physics: Velocity and Distance-Time Graphs
- Speed & Velocity
- Speed and Velocity are both measured in m/s (or km/h or mph).
- They both simply say how fast you're going.
- Differences
- Speed is just how fast you're going (e.g. 20 m/s) - the direction doesn't matter.
- Velocity is the speed in a given direction, e.g. 20 m/s north.

- Distance-Time Graphs
- 1) A distance-time graph shows the distance travelled by an object over time.
- 2) The slope of a distance-time graph is called the gradient.
- 3) The gradient of a distance-time graph tells you how fast your object is travelling.
- 4) Flat sections are where the object is stationary-it's stopped.
- 5) Straight uphill (/) or downhill (\) sections mean it is travelling at a steady speed.
- 6) The steeper the graph, the faster it's going.
- 7) Downhill sections mean it's going back towards its starting point.
- 8) Curves show a change in speed.
- 9) A steepening curve means it's speeding up (increasing gradient). This is called acceleration.
- 10) A levelling off curve means it's slowing down (decreasing gradient). This is called deceleration.

- 9) A steepening curve means it's speeding up (increasing gradient). This is called acceleration.

- 8) Curves show a change in speed.

- 7) Downhill sections mean it's going back towards its starting point.

- 6) The steeper the graph, the faster it's going.

- 5) Straight uphill (/) or downhill (\) sections mean it is travelling at a steady speed.

- 4) Flat sections are where the object is stationary-it's stopped.

- 3) The gradient of a distance-time graph tells you how fast your object is travelling.

- 2) The slope of a distance-time graph is called the gradient.

- 1) A distance-time graph shows the distance travelled by an object over time.

- Speed & Velocity

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