Answers

2014-07-29T12:14:13+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Initial velocity = u  final velocity = v = u/2
distance = s = 6 cm 
apply   v² = u²  + 2 a s  =>  u²/4 = u² + 2 a 6 => -3/4 u² = 12 a
  a = - 1/16 u²    a is -ve and so it is slowing down
     apply again v² = u² + 2a S
     now v =0.  initial speed = u²/4    So  0 = u²/4 - 2  1/16  u² S
     S =  2 cm

0
2014-07-29T13:36:06+05:30
Because velocity is inversely proportional to the distance travelled

0