GCSE Physics
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Speed and velocity are both a measure of
how fast you are going

speedAll speed and velocity are both measured in
m/s

speed is
How fast you are going with regard to direction

Velocity however
Is a measure of how fast you are you going , however it must also have the direction specified

Label the graph frbot left to right on the top and then left to right on the bottom
 Stopped
 decelerating
 steady speed
 accelerating
 steady speed (in other direction)


On a distance time graph what does the gradient show us
How fast the object is travelling . This is because the gradient is the change in distance (vertical axis) divided by the change in time (horizontal axis)

on a distance time graph the gradient =
Speed

On a distance time graph flat sections are where the object is
Stationary

On a distance time graph straight uphill or downhill means
It's travelling at a steady speed

On a distance time graph downhill sections means
It's going back to starting points

On a distance time graph curves
Represent acceleration or deceleration

On a distance time graph a steeping curve means its
Speeding up

On a distance time graph a levelling off curve means its
slowing down

Acceleration is
 How quickly velocity is changing
 this change in velocity can be a change in speed or change in direction or both

what is the formula for acceleration
 Change in velocity
 
 time taken
or
 (v  u)
 
 t
 here v is tye final velocity and u is the initial velocity

What are the units of acceleration
 m/s ^2
 acceleartion is the change inn velocity (m/s) per second (s)

A skulling cat accelerates from 2m/s to 6m/s in 5.6s find its acceleration
A = (vu) / t

Label the graph from left to right on the top and then left to right on the bottom
 Steady speed
 steady speed
 acceleation
 increasing acceleration
 dece