What does a distance-time graph show?
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What does a distance-time graph show?
A distance-time graph shows how the distance of an object from a point changes over time.
What does a horizontal line on a distance-time graph represent?
A horizontal line on a distance-time graph represents an object that is not moving (it is stationary).
True or False?
If a distance-time graph has a positive gradient then the object is moving further away from the original point.
True.
If a distance-time graph has a positive gradient then the object is moving further away from the original point.
What does the gradient of a distance-time graph represent?
The gradient of a distance-time graph represents the speed at which the object is moving.
True or False?
If a distance-time graph has a straight line then the speed of the object is increasing.
False.
If a distance-time graph has a straight line then the speed of the object is constant.
What does a speed-time graph show?
A speed-time graph shows how the speed of an object changes over time.
What does a horizontal line on a speed-time graph represent?
A horizontal line on a speed-time graph represents an object moving with a constant speed.
What does the gradient of a speed-time graph represent?
The gradient of a speed-time graph represents the acceleration of the object.
What does the area underneath a speed-time graph represent?
The area underneath a speed-time graph represents the distance that the object has travelled.
True or False?
If a speed-time graph has a negative gradient then the object is slowing down.
True.
If a speed-time graph has a negative gradient then the object is slowing down.
True or False?
When a speed-time graph touches the horizontal axis, it means that the object is back where it started.
False.
When a speed-time graph touches the horizontal axis, it means that the object is not moving (it is at rest).
What is a conversion graph?
A conversion graph shows how to convert from one quantity to another quantity.
Examples of quantities you could convert using a graph include:
US dollars ($) and GB Pounds (£)
ºC and ºF
Number of miles travelled and litres of petrol used
How do you use a conversion graph?
To convert one quantity to another quantity using a conversion graph:
Find the value on the axis for the given quantity.
Draw a straight line (horizontal or vertical) from the value to the graph.
Draw a straight line from this point on the graph to the other axis.
Read off the value on this axis.
True or False?
Acceleration is the rate at which the distance of an object from a particular point changes with time.
False.
Acceleration is not the rate at which the distance of an object from a particular point changes with time.
Speed is the rate at which the distance of an object from a particular point changes with time.
Acceleration is the rate at which the speed of an object changes with time.
True or False?
The rate of change between two variables is the gradient of the graph when the variables are used for the axes.
True.
The rate of change between two variables is the gradient of the graph when the variables are used for the axes.
True or False?
The rate of change is larger when the graph is steeper.
True.
The rate of change is larger when the graph is steeper.
Water is poured into a container. The volume (measured in cm3) changes with respect to time (measured in seconds).
What is an appropriate unit of measure for the rate of change of the volume with respect to time?
Water is poured into a container. The volume (measured in cm3) changes with respect to time (measured in seconds).
The rate of change of the volume with respect to time can be measured in cm3 per second.