Forces & their Interactions (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Definition of scalar
Definition of scalar
Magnitude only, no direction
Examples of scalars
Examples of scalars
Mass, temp, speed, energy, distance, time
Definition of vector
Definition of vector
Both magnitude and direction
Examples of vectors
Examples of vectors
Displacement, weight, force, velocity, acceleration, momentum
What is displacement?
What is displacement?
Distance in a specific direction
How are vectors represented?
How are vectors represented?
By arrows
Arrow length indicates what?
Arrow length indicates what?
Magnitude of vector
Arrow direction indicates what?
Arrow direction indicates what?
Direction of vector
Sign of scalars
Sign of scalars
Generally non-negative
Can vectors be negative?
Can vectors be negative?
Yes, depending on direction
Speed vs velocity difference
Speed vs velocity difference
Speed is magnitude; velocity includes direction
m/s: speed or velocity?
m/s: speed or velocity?
Speed (velocity needs direction like m/s at )
Constant speed on roundabout: velocity?
Constant speed on roundabout: velocity?
Changing (direction changes)
Constant speed, changing direction: accelerating?
Constant speed, changing direction: accelerating?
Yes (changing velocity = acceleration)