Physics speed, distance, acceleration

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What is speed measured in?
m/s
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What is the equation for speed?
speed = distance divided by time
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What is acceleration measured in?
m/s^2
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What is the equation for acceleration?
change in velocity divided by time
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What does the steepness of a distance time graph tell you?
speed of the object
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What does the steepness of a velocity time graph tell you?
The acceleration of the object
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What does the area under a velocity time graph tell you?
The distance travelled by the object
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Write the meaning of a steep, flat/horizontal and less steep line in a velocity time graph
Steep line = high constant acceleration
Less steep line = lower constant acceleration
Flat/horizontal line = constant speed
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Explain how to find the distance travelled in a velocity time graph
Split the graph into triangles and recentagles. Then find the area of each section and add them up.
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What do stopping, thinking and braking distances mean?
Stopping distance = breaking distance + thinking distance
Thinking distance = distance travelled between seeing the object and applying the breaks
Breaking distance = distance travelled between applying the breaks and coming to a stop
Stopping distance =
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Name all of the factors that could affect your thinking distance
Speed of vehicle
Alcohol
Tiredness
Drugs/medication
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Name all the factors that could affect your braking distance
Speed of vehicle
Condition of brakes
Condition of tyres
Conditions of road
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What is reaction time
The time taken for the driver to react
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How do you calculate reaction time?
Thinking distance divided by speed
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Why are the breaking distance and speed not related?
They are not directly proportional. As the speed increases the breaking distance increases at an increasing rate
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Other cards in this set

Card 2

Front

What is the equation for speed?

Back

speed = distance divided by time

Card 3

Front

What is acceleration measured in?

Back

Preview of the front of card 3

Card 4

Front

What is the equation for acceleration?

Back

Preview of the front of card 4

Card 5

Front

What does the steepness of a distance time graph tell you?

Back

Preview of the front of card 5
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