Physics-
General
Easy
Question
A stone dropped from a building of height 
and it reaches after 
seconds on earth. From the same building if two stones are thrown (one upwards and other downwards) with the same velocity 
and they reach the earth surface after 
and 
seconds respectively, then
The correct answer is:
If a stone is dropped from height then
(i)
if a stone is thrown upward with velocity then
(ii)
If a stone is thrown downward with velocity then
(iii)
From (i) (ii) and (iii) we get
(iv)
(v)
Dividing (iv) and (v) we get
Or 
By solving
Related Questions to study
Physics-
Displacement 
of a particle is related to time 
as
Where 
are constants of the motion. The velocity of the particle when its acceleration is zero is given by
Displacement of a particle is related to time as
Where are constants of the motion. The velocity of the particle when its acceleration is zero is given by
Physics-General
Physics-
A body 
is thrown up vertically from the ground with a velocity 
and another body 
is simultaneously dropped from a height 
. They meet at a height 
if is equal to
A body is thrown up vertically from the ground with a velocity and another body is simultaneously dropped from a height . They meet at a height if is equal to
Physics-General
Physics-
A train moves from one station to another 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is
A train moves from one station to another 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey isPhysics-General
Physics-General
Physics-
A particle moves along a straight line such that its displacement at any time is given by 
The velocity when its acceleration is zero is
A particle moves along a straight line such that its displacement at any time is given by The velocity when its acceleration is zero is
Physics-General
Physics-
In the given 
graph, the distance travelled by the body in 5 will be
In the given graph, the distance travelled by the body in 5 will bePhysics-General
Physics-General
Physics-
A body travels for 15 
starting from rest with constant acceleration. If it travels distances 
and 
in the first five seconds, second five secods and next five seconds respectively the relation between and is
A body travels for 15 starting from rest with constant acceleration. If it travels distances and in the first five seconds, second five secods and next five seconds respectively the relation between and is
Physics-General
Physics-
From the top of a tower, a particle is thrown vertically downwards with a velocity of 
. The ratio of the distances covered by it in the 3rd and 2nd seconds of its motion is (Given, 
)
From the top of a tower, a particle is thrown vertically downwards with a velocity of . The ratio of the distances covered by it in the 3rd and 2nd seconds of its motion is (Given, )
Physics-General
Physics-
A train moves from one station to another 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is
A train moves from one station to another 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey isPhysics-General
Physics-General
Physics-
The position of a particle at any instant is given by 
cos 
. The speed-time graph of the particle is
The position of a particle at any instant is given by cos . The speed-time graph of the particle is
Physics-General
Physics-
A body of 
10 
is moving with a constant velocity of 
.When a constant force acts for 4 
on it, it moves with a velocity 2 
in the opposite direction. The acceleration produced in it is
A body of 10 is moving with a constant velocity of .When a constant force acts for 4 on it, it moves with a velocity 2 in the opposite direction. The acceleration produced in it is
Physics-General
Physics-
A projectile is fired vertically upwards with an initial velocity . After an interval of T seconds a second projectile is fired vertically upwards, also with initial velocity is
A projectile is fired vertically upwards with an initial velocity . After an interval of T seconds a second projectile is fired vertically upwards, also with initial velocity is
Physics-General
Physics-
Two trains each 
long are travelling in opposite direction with velocity and 
. The time of crossing is
Two trains each long are travelling in opposite direction with velocity and . The time of crossing is
Physics-General
Physics-
A stone thrown upward with a speed from the top of the tower reaches the ground with a velocity 
. The height of the tower is
A stone thrown upward with a speed from the top of the tower reaches the ground with a velocity . The height of the tower is
Physics-General
Physics-
The velocity-time graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in 
are respectively
The velocity-time graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in are respectivelyPhysics-General
Physics-General
Physics-
A particle moves for 
with velocity 
and then velocity 
for another and finally moves with velocity 
for next . What is the average velocity of the particle
A particle moves for with velocity and then velocity for another and finally moves with velocity for next . What is the average velocity of the particle
Physics-General
