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A body starts from rest and moves with u...

A body starts from rest and moves with uniform acceleration of `5ms^(-2)` for 8 seconds. From that times the acceleration ceases. Find the distance covered in 12s starting from rest.

Text Solution

Verified by Experts

The velocity after 8 seconds `v=0+5xx8=40m//s`
Distance covered in 8 seconds
`s_(0)=0+(1)/(2)xx5xx64=160n`
After 8s the body moves with uniform velocity and distance covered in 4s with uniform velocity is
`S=vt=40xx4=160m`
The distance covered in `12s=160+160=320m`
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