Physics-
General
Easy
Question
A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is
- Equal to the time of fall
- Less than the time of fall
- Greater than the time of fall
- Twice the time of fall
The correct answer is: Less than the time of fall
Let the initial velocity of ball be
Time of rise and height reached
Time of fall is given by
because
Related Questions to study
Physics-
A body moves from rest with a constant acceleration of . Its instantaneous speed (in ) at the end of is
A body moves from rest with a constant acceleration of . Its instantaneous speed (in ) at the end of is
Physics-General
Physics-
An athlete completes one round of a circular track of radius in . What will be his displacement at the end of 2 min.
An athlete completes one round of a circular track of radius in . What will be his displacement at the end of 2 min.
Physics-General
Physics-
An athlete completes one round of a circular track of radius in . What will be his displacement at the end of 2 min.
An athlete completes one round of a circular track of radius in . What will be his displacement at the end of 2 min.
Physics-General
Physics-
An object moving with a speed of , is decelerated at a rate given by where is the instantaneous speed. The time taken by the object, to come to rest would be
An object moving with a speed of , is decelerated at a rate given by where is the instantaneous speed. The time taken by the object, to come to rest would be
Physics-General
Physics-
The displacement of a particle is proportional to the cube of time elapsed. How does the acceleration of the particle depends on time obtained
The displacement of a particle is proportional to the cube of time elapsed. How does the acceleration of the particle depends on time obtained
Physics-General
Physics-
A motion boat covers a given distance in 6 h moving down stream of a river. It covers the same distance in 10 h moving upstream. The time (in hour) it takes to cover the same distance in still water is
A motion boat covers a given distance in 6 h moving down stream of a river. It covers the same distance in 10 h moving upstream. The time (in hour) it takes to cover the same distance in still water is
Physics-General
Physics-
A particle starts from rest, acceleration at for and then goes with constant speed for and then decelerates at till it stops. What is the distance travelled by it
A particle starts from rest, acceleration at for and then goes with constant speed for and then decelerates at till it stops. What is the distance travelled by it
Physics-General
Physics-
A Body moves 6 north.8 east and 10 vertically upwards, what is its resultant displacement from initial position
A Body moves 6 north.8 east and 10 vertically upwards, what is its resultant displacement from initial position
Physics-General
Physics-
Which of the following graphs can not possibly represent one dimensional motion of a particle
Which of the following graphs can not possibly represent one dimensional motion of a particlePhysics-General
Physics-General
Physics-
A particle moves along a parabolic path in such a way that the -component of velocity remains constant and has a value . The acceleration of the particle is
A particle moves along a parabolic path in such a way that the -component of velocity remains constant and has a value . The acceleration of the particle is
Physics-General
Physics-
When a ball is thrown up vertically with velocity , it reaches a maximum height of . If one wishes to triple the maximum height then the ball should be thrown with velocity
When a ball is thrown up vertically with velocity , it reaches a maximum height of . If one wishes to triple the maximum height then the ball should be thrown with velocity
Physics-General
Physics-
A body is projected vertically upwards. The times corresponding to height while ascending and while descending are respectively. Then the velocity of projection is (g is acceleration due to gravity)
A body is projected vertically upwards. The times corresponding to height while ascending and while descending are respectively. Then the velocity of projection is (g is acceleration due to gravity)
Physics-General
Physics-
A body falls from rest, its velocity at the end of first second is
A body falls from rest, its velocity at the end of first second is
Physics-General
Physics-
A body falling for 2 seconds covers a distance is equal to that covered in next second. Taking ,
A body falling for 2 seconds covers a distance is equal to that covered in next second. Taking ,
Physics-General
Physics-
What determines the nature of the path followed by the particle
What determines the nature of the path followed by the particle
Physics-General