Answers

2014-08-12T15:10:29+05:30
V²= u² + 2 a * s
a= (v²-u²)/2*s
  = (400-1600)/(2*300)
  =-1200/600
  = -2
0= 20² - 2*2*s
s=400/4
  =100 (answer)
0