SCI Physics Motion T1 26 🌊

Scalar

quantity (size/magnitude), described by size ONLY.”
Eg: distance, speed, time, mass

Vector

quantity (size/magnitude), number and direction.
Eg: displacement, velocity, acceleration

acceleration

• rate at which an object changes its velocity over time.

displacement time graph, gradient, upward slope, flat line, downwardslope

• Gradient = velocity

• Upward = positive velocity

• Flat = stopped

• Downward = moving back

Velocity time graph gradient, horizontal, upward slope, downward slope

• Gradient = acceleration

• Horizontal line = constant velocity

• Upward slope = accelerating

• Downward slope = decelerating

distance

measure of length- scalar, s

displacement

total change in position- vector, s

speed

rate at which distance changes

velocity

rate at which object changes its position

u

initial speed/velocity m/s

v

final speed /velocity m/s

a

acceleration- m/s/s, ms-2

t

time, s

variables

independent- changes, x axis, dependent- measured, controlled- same

hypothesis

if, then, bc