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Speed, distance and time

how they relate and some interesting facts

Scott Giffin

on 22 October 2012

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Transcript of Speed, distance and time

What you should know
and some random bits Speed, Distance and Time Speed - the definition Rapidity of movement or action

or in scientific terms

Distance traveled divided by the time of travel We can Plot a speed time graph
From this we can calculate the distance traveled
Distance = Area under graph
D =(1/2x4x8)+(3x8)+(1/2x3x8)
= 16 + 24 +12
= 52m Split into groups of 3 or 4

You need to calculate how long it takes your car to travel 1 m Now have a try Distance = The amount of space
between two things or people Time - A nonspatial continuum in which events occur in apparently irreversible succession from the past through the present to the future. Average top speed of a pig is 11 miles per hour 200m in 19.59 seconds - 22.84 miles per hour Domestic cats can sprint up to 31 miles per hour Bugatti Veyron Super Speed - top speed 267 miles per hour Gatso Speed Cameras ability to take up to 400 pictures identify between cars/vans and HGVs separately can cost as much as £40,000 Uses lines on the road and 2 flashes SPECS average speed camera Work in sets of 2 or 3 a set distance apart takes pictures of every vehicle uses infra red to work day and night Nikki has to travel a total of 351 miles. She travels the first 216 miles in 4 hours.
(a) What is her average speed for the first part of the journey? To find average speed, we need to divide distance by time. 216 miles ÷ 4 hours = 54 mph Her average speed is the same for the whole of her journey. (b) How long does the whole journey take? To find time, we need to divide distance by speed. 351 miles ÷ 54 mph = 6.5 hours Top speed recorded at 45 miles per hour For harder examples Since speed varies we can use integration a car
a tape measure
a stop watch
a calculator You will need
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