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The position of a particle moving along x axis varies with time as shown in fig. The average acceleration of particle in time interval t=0 to t=8 second is?

The position of a particle moving along x axis varies with time as shown in fig. The average acceleration of particle in time interval t=0 to t=8 second is?

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Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
Slope it tan(theta) of x-t curve gives us velocity
therefore find slope at t=0 gives vel v1 and slope at t=8 gives final velocity v2 
now accn is equal to V2-V1/t2-t1
and also v2 is -ve bcz slope at t=8 is-ve
therefore v2=-20 and v1 =20 put values 
in formula we get a= -5 m/sec2
hope it helps

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