Physics-
General
Easy
Question
A bullet fired into a fixed wooden block loses half of its velocity after penetration 40 cm. it comes to rest after penetrating a further distance of
The correct answer is:
Let initial velocity of body a point 
is 
is 40 cm.
From 
Let on penetrating 40 cm in a wooden block, the body moves 
distance from 
So, for 
Related Questions to study
Physics-
The acceleration of a particle is increasing linearly with time 
as 
The particle starts from the origin with an initial velocity 
The distance travelled by the particle in time 
will be
The acceleration of a particle is increasing linearly with time as The particle starts from the origin with an initial velocity The distance travelled by the particle in time will be
Physics-General
Physics-
A bus begins to move with an acceleration of 
A man who is 48 m behind the bus starts running at 
to catch the bus. The man will be able to catch the bus after
A bus begins to move with an acceleration of A man who is 48 m behind the bus starts running at to catch the bus. The man will be able to catch the bus after
Physics-General
Physics-
A particle travels 10
in first 
and 
in next 
Assuming constant acceleration what is the distance travelled in next 
A particle travels 10 in first and in next Assuming constant acceleration what is the distance travelled in next
Physics-General
Physics-
The initial velocity of a particle is 
and the acceleration 
is given by 
. Which of the following relation is valid
The initial velocity of a particle is and the acceleration is given by . Which of the following relation is valid
Physics-General
Physics-
An express train is moving with a velocity 
. Its driver finds another train is moving on the same track in the same direction with velocity 
. To escape collision, driver applies a retardation 
on the train. The minimum time of escaping collision will be
An express train is moving with a velocity . Its driver finds another train is moving on the same track in the same direction with velocity . To escape collision, driver applies a retardation on the train. The minimum time of escaping collision will be
Physics-General
Physics-
A particle moves for 20 s with velocity 
and then moves with velocity 
for another 20 s and finally moves with velocity 
for next 20 s. What is the average velocity of the particle?
A particle moves for 20 s with velocity and then moves with velocity for another 20 s and finally moves with velocity for next 20 s. What is the average velocity of the particle?
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 the motion is (Take 
)
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 the motion is (Take )
Physics-General
Physics-
The time taken by a block of wood (initially at rest)to slide down a smooth inclined plane 
long (angle of inclination is 
) is
The time taken by a block of wood (initially at rest)to slide down a smooth inclined plane long (angle of inclination is ) is
Physics-General
Physics-
A ball is dropped on the floor from a height of 
. It rebounds to a height of 
. If the ball is in contact with the floor for 
sec, the average acceleration during contact is
A ball is dropped on the floor from a height of . It rebounds to a height of . If the ball is in contact with the floor for sec, the average acceleration during contact is
Physics-General
Physics-
The coordinates of a moving particle at any time are given by 
The speed of the particle at time is given by
The coordinates of a moving particle at any time are given by The speed of the particle at time is given by
Physics-General
Physics-
Two bodies of different masses are dropped from heights of 16 m and 25 m respectively. The ratio of the time taken by them to reach the ground is
Two bodies of different masses are dropped from heights of 16 m and 25 m respectively. The ratio of the time taken by them to reach the ground is
Physics-General
Physics-
A particle starts from rest. Its acceleration 
versus time 
is as shown in the figure. The maximum speed of the particle will be
A particle starts from rest. Its acceleration versus time is as shown in the figure. The maximum speed of the particle will be
Physics-General
Physics-
If a body starts from rest and travels 
in the 6th second, then what is the acceleration
If a body starts from rest and travels in the 6th second, then what is the acceleration
Physics-General
Physics-
A body is falling freely under gravity. The distances covered by the body in first, second and third minute of its motion are in the ratio
A body is falling freely under gravity. The distances covered by the body in first, second and third minute of its motion are in the ratio
Physics-General
Physics-
A body, thrown upwards with some velocity, reaches the maximum height of 
Another body with double the mass thrown up, with double initial velocity will reach a maximum height of
A body, thrown upwards with some velocity, reaches the maximum height of Another body with double the mass thrown up, with double initial velocity will reach a maximum height of
Physics-General
