Answers

2016-01-07T21:55:21+05:30
S=ut - 1/2gt"2..{against gravity}.
15t =5t"2..t=0 or 3..t=3s. or 2u/g=3s.
V=0 + gt=10 x 3=30m/s
0
2016-01-08T11:08:48+05:30
i hope it helps...................
see the attached .............
1 5 1