Speed (Edexcel GCSE Physics): Flashcards
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Practise the cards
14 cards from this deck
What type of quantity is speed?
What type of quantity is speed?
Scalar
What speed tells us about an object's movement
What speed tells us about an object's movement
How fast it is moving (not direction)
Is speed constant over time?
Is speed constant over time?
No, it is not constant
Distance (definition and type)
Distance (definition and type)
How far an object moves; scalar quantity
Displacement (definition and type)
Displacement (definition and type)
Distance & direction in straight line from start to end; vector
Formula for speed
Formula for speed
(distance/time)
How age affects speed
How age affects speed
Fitness decreases with age, reducing speed
How terrain affects speed
How terrain affects speed
Rough terrain increases friction; incline requires more energy
How distance travelled affects speed
How distance travelled affects speed
Muscles tire, lactic acid builds up (anaerobic respiration) causing cramps
How fitness level affects speed
How fitness level affects speed
Better fitness = better ability to cope with intense exercise
Normal walking speed
Normal walking speed
1.5 m/s
Typical running speed
Typical running speed
3 m/s
Typical cycling speed
Typical cycling speed
6 m/s
Speed of sound in air
Speed of sound in air
330 m/s