Speed (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards

Scalar

How fast an object moves, but not direction

No, speed is not constant

How far an object moves (scalar)

Distance & direction from start to finish (vector)

$v = \frac{s}{t}$

Fitness decreases with age, reducing speed

More friction & incline reduce speed

Lactic acid builds up, causing muscle cramps

Better fitness helps cope with intense exercise

$1.5 \text{ m/s}$

$3 \text{ m/s}$

$6 \text{ m/s}$

$330 \text{ m/s}$