S Speed, Displacement, Velocity And Acceleration Flashcards
Definition of speed.
Speed is a measure of how quickly an object can move from one place to another.
The formula for speed.
Speed = Distanced travelled (m)
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Time taken (s)Maths note for calculating speed
When using this formula in science, distance must be given in metres and time in seconds.
Displacement definition.
Displacement is distance in a given direction.
What does displacement depend on?
Displacement depends only on your starting position and your finishing position. It does not matter what pathway you took to get there.
Velocity definition.
Velocity is speed in a given direction.
Velocity formula
velocity = change in displacement
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Time Taken
Explain the Distance-time graphs setup.
Time is placed on the x-axis (horizontal axis) and distance is placed on the y-axis (vertical).
Explain the introduction and conclusions of the experiment ‘To use a data logger to measure the speed of an object.
To use a data logger to measure the speed of an object.
Introduction:
in this experiment, you will use a motion sensor to measure the position of a trolley on a track over a period of time. From the graph of distance-time, you should be able to calculate the speed of the trolley.
Conclusion:
A motion sensor can be used to calculate the speed of a trolley. The slope of the distance-time graph is used to calculate speed.
What is the mnemonic used to remember the formulas of distance, speed and time?
Dad’s silly triangle.
Distance
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speed x time.
Definition of acceleration.
The acceleration of an object is the change in velocity per second.
Formula for acceleration.
Acceleration = change in velocity
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Time taken
Explain the Maths notes for acceleration.
When calculating acceleration you divide m/s by seconds. The units of acceleration are m/s/s. This is most often written as m/s^2 or sometimes m s ^-2.
Negative acceleration means that an object is slowing down.
Explain the introduction and conclusions of the experiment ‘To use a data logger to measure the acceleration of an object.
To use a data logger to measure the acceleration of an object
Introduction:
in this experiment, you will use a motion sensor to measure the velocity of a trolley on a track over a period of time. From the graph of velocity-time, you should be able to calculate the acceleration of the trolley.
Conclusion:
A motion sensor can be used to calculate the acceleration of a trolley. The slope of the velocity-time graph is used to calculate acceleration.
The acceleration of a body can be measured how?
The acceleration of a body can be measured using a motion sensor to plot a graph of velocity-time. The slope of this graph is the acceleration of the object.
