# POSITION ON TIME GRAPHS - PowerPoint PPT Presentation

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POSITION ON TIME GRAPHS. The Axis. The X-axis is time The Y-axis is position This needs to go positive and negative. – Position (m)+ . Time (s). Upward lines. Upward lines (positive slopes) mean the object is going forward / right Steeper lines mean faster velocity.

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POSITION ON TIME GRAPHS

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### The Axis

• The X-axis is time

• The Y-axis is position

• This needs to go positive and negative

– Position (m)+

Time (s)

### Upward lines

• Upward lines (positive slopes) mean the object is going forward / right

• Steeper lines mean faster velocity

– Position (m)+

Time (s)

### Downward lines

• Downward lines (negative slope) mean the object is moving backwards or left.

• Steeper lines mean faster velocity

– Position (m)+

Time (s)

### Horizontal line

• A horizontal or flat line means that the object is not moving (staying at the same position).

• Flat lines mean no velocity

– Position (m)+

Time (s)

### Calculating velocity

• These graphs can show velocity by calculating the slope

• The steeper the slope the faster the object’s velocity

• Slope is rise / run. So (positionf – positioni) / (timef – timei)

– Position (m)+

Time (s)