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Byju's Answer
Standard XII
Physics
1st Equation of Motion
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Question
From the top of 490 m cliff a boy throws a stone horizontally with an intial speed of 15ms-1.what is time taken by the object to reach the ground??
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Similar questions
Q.
A hiker stands on the edge of a cliff 490 , above the ground and throws a stone horizontally with an initial speed of
15
m
s
1
. Neglecting air resistance, find the time taken by the stone to reach the ground, and the speed with which it hits the ground.
(
T
a
k
e
g
=
9.8
m
s
−
2
)
.
Q.
From the top of a building of height
40
m
, a boy throws a stone vertically upwards with an initial velocity of
10
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s
−
1
such that it eventually falls to the ground. At what time will the stone reach the ground?
(
g
=
10
m
s
−
2
)
Q.
A projectile is fired horizontally with a speed of
98
m
s
−
1
from the top of a hill
490
m
high.
Find the time taken to reach the ground.
Q.
Two balls are projected horizontally from the top of a building simultaneously with velocities
15
m
s
−
1
and
20
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s
−
1
respectively, then the ratio of times taken by them to reach the ground is :
Q.
A boy on a 784 m high cliff drops a stone. One second later, he throws another stone downwards with some speed. The two stones reach the ground simultaneously. Find the speed with which the second stone was thrown.
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