# Non-linear distance-time graphs

I can interpret non-linear distance-time graphs.

# Non-linear distance-time graphs

I can interpret non-linear distance-time graphs.

## Lesson details

### Key learning points

- Speed may not always be constant.
- Acceleration may not always be constant.
- Depending on the variables, multiple graphs can represent the same journey.

### Common misconception

Pupils may think a horizontal line on a speed-time means the object is stationary.

The $$y$$ axis is plotting speed so a horizontal line means the speed has not changed in that time. But this can be at any speed. Pupils need to double check axes to know what sort of graph they are using.

### Keywords

Speed - Speed is the rate at which something is moving. It is measured as the distance travelled per unit of time.

Acceleration - Acceleration is the rate of change of speed with respect to time.

Deceleration - Deceleration is the rate at which the speed of an object is decreasing.

### Licence

This content is Â© Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Starter quiz

### 6 Questions

## Exit quiz

### 6 Questions

a) -Â

Fastest constant speed

b) -Â

Object decelerating

c) -Â

Object stationary

d) -Â

Object's speed is increasing

e) -Â

Slowest section of (non-zero) constant speed