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Forces and Motion

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Paul Sheffield

on 27 September 2013

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Transcript of Forces and Motion

Forces and Motion
Velocity time graphs

How are velocity time graphs and distance time graphs different?
in your groups describe what the following show on a velocity time graph
horizontal line
vertical line straight down
upwards gradient
downwards gradient
upwards curve
down wards curve
Acceleration and deceleration

Ticker tape timers
one dot every 1/50 second
1 dot = 0.02 seconds
10 dots = 0.2 s
5 dots = 0.1 s
length of 5 dots/ 0.1= speed (m/s)
The piece of tape in the diagram is 5 SPACES long.
Each space is 1/50 s so five spaces will be 5/50 s or 1/10s.
So the piece of tape went through the timer in 1/10s. The piece of tape is 7 cm long.
If 7cm of tape go through in 1/10 s then 70cm will go through in 1 s.
The speed is then 70 cm/s.
which object is:
Constant speed?
use the ticker tape to calculate the acceleration of the trolly down the lamp.
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