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ghoran
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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)
speed =
Distance
-----------
time
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 = (v-u) / t
Label the graph from left to right on the top and then left to right on the bottom