Question

from the top of a tower of height 20m a boy drops one stone ,one second later he throws another stone vertically downwards so that both hit the ground together the initial velocity of the second stone is (g=10m/s^2)

Answer 1

try this and tell me if you find any difficulties

Answer 2

i tried this but i got different answer so i posted this question...... all the question which i am posting is already tried by me ......

Answer 3

ohh k.

Answer 4

let me guide u

Answer 5

thats a good idea....

Answer 6

i think first we have to find time???

Answer 7

nw first give me the answer?

Answer 8

15m/s

Answer 9

As usual use s=ut+1/2at^2

Answer 10

we have to find t is it....

Answer 11

ya u r right.

Answer 12

t=2s

Answer 13

this one u worked out nw or the given answer?

Answer 14

next what to do t1=t2

Answer 15

the times wont be equal.

Answer 16

t1=t2-1

Answer 17

yes u r right

Answer 18

for jst dropping the initial velocty is 0.

Answer 19

ok

Answer 20

so u cn find t1 using that adn t2 too.

Answer 21

t2=3s

Answer 22

jst a moment

Answer 23

sorry t1=t2+1.
so t2=1s

Answer 24

oh now got it..........thanzzz

Answer 25

yww