Question

 A body is moving with a velocity of 12 m/s and it comes to rest in 18 m, what was the acceleration?





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Answer 1

A body is moving with a velocity of 12 m/s and it comes to rest in 18 m, -4m/s^2 was the acceleration.

Answer 2

Here

Initial velocity(u)=12m/s

Final velocity(v)=0m/s

Distance travelled(s)=18m

Therefore

v²-u²=2as

0²-12²=2a×18

-144=36a

-144/36=a

-4 m/s²=a