zaphod
A falling stone takes 0.2 seconds to fall past a window which is 1 m high. From how far above the top of the window was the stone dropped?



This Question is Closed

zaphod
Best Response
You've already chosen the best response.
0
@sauravshakya

zaphod
Best Response
You've already chosen the best response.
0
shall i show the working?

sauravshakya
Best Response
You've already chosen the best response.
2
Yep

zaphod
Best Response
You've already chosen the best response.
0
s= ut +1/2at^2
s 1 = 1/2 * 9.81 * (0.2)^2
s = 1.196

sauravshakya
Best Response
You've already chosen the best response.
2
s=ut+1/2 at^2
x=0+1/2 * 9.81 * (0.2)^2
x=0.196 m

sauravshakya
Best Response
You've already chosen the best response.
2
Is the answer 0.196m

zaphod
Best Response
You've already chosen the best response.
0
but the answer is 0.82

sauravshakya
Best Response
You've already chosen the best response.
2
oh got it..

sauravshakya
Best Response
You've already chosen the best response.
2
Actually,
s= ut + 1/2 at^2
1 = u*0.2 + 1/2 (9.81) *(0.2^2)
u=4.02 m/s

zaphod
Best Response
You've already chosen the best response.
0
a falling stone right

sauravshakya
Best Response
You've already chosen the best response.
2
Now,
v^2=u^2+2as
(4.02)^2=0^2+2*(9.81)*x
x=0.82m

sauravshakya
Best Response
You've already chosen the best response.
2
Yes, the falling stone takes 0.2 seconds to reach the ground from the window

sauravshakya
Best Response
You've already chosen the best response.
2
got it?

zaphod
Best Response
You've already chosen the best response.
0
dw:1345877484628:dw

zaphod
Best Response
You've already chosen the best response.
0
can u drw a diagram?

zaphod
Best Response
You've already chosen the best response.
0
oh i get it:)

sauravshakya
Best Response
You've already chosen the best response.
2
@zaphod u there?

zaphod
Best Response
You've already chosen the best response.
0
i understood thnks bro:)

sauravshakya
Best Response
You've already chosen the best response.
2
dw:1345878136099:dwActually its: