Zusammenfassung der Ressource
AQA GCSE Physics Unit 2
- Energy and Electricity
- The Atom
- Motion
- Velocity
- Speed and velocity are
both how fast you are
going and are both
measured in m/s
- Speed is just how fast
you are going.
Velocity, however
must also have the
direction specified.
- Distance-Time
graphs are a way
of describing
something
moving through
time and space.
- The gradient of the
graph tells you how
fast the object is
travelling because
the gradient is the
change in the
distance/ by the
change in time
- Gradient = Speed
- Flat sections are when
the object is stationary
- Straight uphill or downhill
sections means it is
travelling at a steady
speed
- The steeper the graph the
faster the object is going
- Downhill sections means it's
going towards its starting point
- Curves represent acceleration or deceleration
- A steepening curve means its
speeding up. A levelling off curve
means it's slowing down
- Calculating speed from a Distance-Time Graph
- Speed = Gradient = Vertical/
Horizontal
- DISTANCE = SPEED * TIME
- Acceleration
- Change in velcoty = Acceleration * Time Taken
- Acelleration is how quickly
the velocity is changing the
change in veloctiy can be a
change in speed or change
in direction or both