Physics-
General
Easy
Question
A balloon rises from rest with a constant acceleration g/8. A stone is released from it when it has risen to height h. The time taken by the stone to reach the ground is :
The correct answer is:
Related Questions to study
Physics-
If the velocity of a particle is 
, then the average acceleration of the particle between 2s and 5s is:
If the velocity of a particle is , then the average acceleration of the particle between 2s and 5s is:
Physics-General
Physics-
The acceleration of a particle starting from rest, varies with time according to the relation 
The displacement of this particle at a time t will be :
The acceleration of a particle starting from rest, varies with time according to the relation The displacement of this particle at a time t will be :
Physics-General
Physics-
The u – t plot of a moving object is shown in the figure. The average velocity of the object during the first 10 seconds is :
The u – t plot of a moving object is shown in the figure. The average velocity of the object during the first 10 seconds is :
Physics-General
Physics-
From the following displacement–time graph find out the velocity of a moving body :
From the following displacement–time graph find out the velocity of a moving body :
Physics-General
Physics-
The given graph shows the variation of velocity with displacement. Which one of the graph given below correctly represents the variation of acceleration with displacement.
The given graph shows the variation of velocity with displacement. Which one of the graph given below correctly represents the variation of acceleration with displacement.
Physics-General
Physics-
Which of the following graph represents uniform motion :
Which of the following graph represents uniform motion :
Physics-General
Physics-
The displacement–time graph of moving particle is shown below, The instantaneous velocity of the particle is negative at the point :
The displacement–time graph of moving particle is shown below, The instantaneous velocity of the particle is negative at the point :
Physics-General
Physics-
For the velocity–time graph shown in figure below the distance covered by the body in last two seconds of its motion is what fraction of the total distance covered by it in all the seven seconds.
For the velocity–time graph shown in figure below the distance covered by the body in last two seconds of its motion is what fraction of the total distance covered by it in all the seven seconds.
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 6 sec 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 6 sec are respectively :
Physics-General
Physics-
A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers :
A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers :
Physics-General
Physics-
The u – t graph of a moving object is given in figure. The maximum acceleration is
The u – t graph of a moving object is given in figure. The maximum acceleration is
Physics-General
Physics-
An object start sliding on a frictionless inclined plane and from same height another object start falling freely :
An object start sliding on a frictionless inclined plane and from same height another object start falling freely :
Physics-General
Physics-
A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of ball thrown per minute is (g = 10 m/s2)
A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of ball thrown per minute is (g = 10 m/s2)
Physics-General
Physics-
The time taken by a block of wood (initially at rest) to slide down a smooth inclined plane 9.8 m long (angle of inclination is 30null) is :
The time taken by a block of wood (initially at rest) to slide down a smooth inclined plane 9.8 m long (angle of inclination is 30null) is :
Physics-General
Physics-
A ball is thrown vertically upwards from the top of a tower at 4.9 ms–1 It strikes the pond near the base of the tower after 3 seconds. The height of the tower is :
A ball is thrown vertically upwards from the top of a tower at 4.9 ms–1 It strikes the pond near the base of the tower after 3 seconds. The height of the tower is :
Physics-General
