a stone is drop from the top of a building and strikes the ground with a velocity of 30m/s what is the height of building?
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Answered by
2
u=0
v=30
g=9.8
v square =u square+2gh
h= 45.21
v=30
g=9.8
v square =u square+2gh
h= 45.21
kvnmurty:
h = ?
according to me i think its 45.21 m
Answered by
4
as the stone is dropped, so:-
v = 0m/s
u = 30 m/sec
a= -g = -10 (approx. it could be taken as 9.8)
h = ?
v² = u² + 2as
= 0 = 900 - (2 × 10 × h)
⇒ -900/ -20 = h
∴ h = 45m approx.
v = 0m/s
u = 30 m/sec
a= -g = -10 (approx. it could be taken as 9.8)
h = ?
v² = u² + 2as
= 0 = 900 - (2 × 10 × h)
⇒ -900/ -20 = h
∴ h = 45m approx.
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