Physics-
General
Easy
Question
Three objects 
and 
are kept in a straight line on a frictionless horizontal surface. These have masses 
and 
respectively. The object 
moves towards 
with a speed 
and makes an elastic collision with it. Thereafter, makes completely inelastic collision with . All motions occur on the same straight line. Find the final speed (in 
) of the object
The correct answer is:
After elastic collision strikes to with velocity of 
. Now collision between and is perfectly inelastic
By the law of conservation of momentum
Related Questions to study
physics-
The relation between the displacement 
of an object produced by the application of the variable force 
is represented by a graph shown in the figure. If the object undergoes a displacement from 
to 
the work done will be approximately equal to
The relation between the displacement of an object produced by the application of the variable force is represented by a graph shown in the figure. If the object undergoes a displacement from to the work done will be approximately equal to
physics-General
physics-
In the given curved road, if particle is released from then
In the given curved road, if particle is released from then
physics-General
physics-
A body of mass 
slides down a curved track which is quadrant of a circle of radius 
. All the surfaces are frictionless. If the body starts from rest, its speed at the bottom of the track is
A body of mass slides down a curved track which is quadrant of a circle of radius . All the surfaces are frictionless. If the body starts from rest, its speed at the bottom of the track is
physics-General
physics-
A 10 kg brick moves along an 
-axis. Its acceleration as a function of its position is shown in figure. What is the net work performed on the brick by the force causing the acceleration as the brick moves from 
to 
m?
A 10 kg brick moves along an -axis. Its acceleration as a function of its position is shown in figure. What is the net work performed on the brick by the force causing the acceleration as the brick moves from to m?
physics-General
physics-
Force on a particle moving in a straight line varies with distance 
as shown in the figure. The work done on the particle during its displacement of 
Force on a particle moving in a straight line varies with distance as shown in the figure. The work done on the particle during its displacement of
physics-General
physics-
The potential energy of a system is represented in the first figure. The force acting on the system will be represented by
The potential energy of a system is represented in the first figure. The force acting on the system will be represented by
physics-General
physics-
The work done by force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is
The work done by force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is
physics-General
physics-
Two rectangular blocks 
and 
of masses 2kg and 3 kg respectively are connected by spring of spring constant 10.8 
and are placed on a frictionless horizontal surface. The block was given an initial velocity of 0.15 
in the direction shown in the figure. The maximum compression of the spring during the motion is
Two rectangular blocks and of masses 2kg and 3 kg respectively are connected by spring of spring constant 10.8 and are placed on a frictionless horizontal surface. The block was given an initial velocity of 0.15 in the direction shown in the figure. The maximum compression of the spring during the motion is
physics-General
physics-
collide elastically with the row of 6 balls from left. What will happen