Answers

2014-05-02T17:40:42+05:30
Case 1. Displacement = 10m
               Time = 40 sec
                Velocity = 10/40 = 0.25 m/sec
Case 2. Velocity = 0.25 m/sec
               Time = 2 min 20 sec = 140 sec
             Displacement = Velocity * Time 
                                       0.25 *140 = 35 m
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0
Isn't it helpful??????
well, answer is wrong
how????
i got the answer now I'm telling you
4*10m=40m(perimeter of square field )
then after 140 s he will be at opposite corner. or AC(if he starts from A)
by pythagorus theorem
(AC)^2=(AB)^2+(AB)^2
!! = (10M)^2+(10M)^2
!! = 100M^2 + 100M^2
(AC)^2= 200M^2
AC = SQUARE ROOT OF 200M^2
AC = (AFTER PRIME FACTORIZATION OF 200M^2) 10<ROOT>2
  • Brainly User
2014-05-02T17:55:26+05:30
SQ ABCD [figure][ diagonal AC ]
   he starts from A then in 140 sec he will reach opp. corner 
   displacement = AC i.e. x
 x^2= AB^2 +BC^2
 x^2 = 100+100
x^2=200 
x=√200
x=14.14m
0
YA CORRECT BUT ... INSTEAD OF 14.14 IT IS 10<ROOT>2 BUT BOTH ARE SAME