Answers

2015-07-27T00:34:25+05:30
Answer:
    initial speed (u) = 20 m/s
   final speed (v) = 0
  Distance (s) = 50 m
  acceleration (a) = ?
we know that ,
  v² - u ²= 2as
or a = v² - u² / 2s
or a = 20² - 0² / 2*50
or a = 400/100
or a = 4m/s²

hence acc is 4m/s²
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