sensor - Acceleration and deceleration of car using Android device -

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i tried , found speed of car through location.getspeed(); , location using gps in android , want find acceleration , deceleration of car.for have android device parameters gps, or need calculate speed , time have now.i came know acceleration in device, giving coordinates.i want how calculate car acceleration , deceleration.help work outs or suggestions.

use android sensor type_linear_acceleration


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