Velocity on a graph (v=x/t)
I can sketch accurate displacement-time graphs of different motions.
Velocity on a graph (v=x/t)
I can sketch accurate displacement-time graphs of different motions.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Velocity of an object is equal to the gradient of a displacement-time graph.
- A direction in which velocity and displacement are measured needs to be chosen.
- A negative gradient on a displacement-time graph (sloping downwards) represents velocity in the opposite direction.
- A negative value for displacement represents a position ‘behind’ the starting position.
Keywords
Displacement - The displacement of an object is the distance and direction from a specific point. Displacement is a vector.
Displacement-time graph - A displacement-time graph shows the displacement of an object over a period of time.
Motion sensor - A motion sensor measures the distance between itself and an object. We can use the measurements to calculate and plot graphs of displacement, velocity and acceleration.
Common misconception
Negative values on a displacement-time graph always represent motion that is backwards.
Provide opportunities for pupils to plot a range of displacement-time graphs in real time in order for them to understand how the graph represents different motions.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
a vector which is the distance and direction from a point
a vector that gives speed and direction
shows the displacement of an object over a period of time
measures the distance between an object and itself
