Physics-
General
Easy

Question

Three blocks are initially placed as shown in the figure. Block A has mass m and initial velocity v to the right. Block B with mass m and block C with mass 4m are both initially at rest. Neglect friction. All collisions are elastic. The final velocity of block A is

  1. 0.6v to the left    
  2. 1.4v to the left    
  3. v to the left    
  4. 0.4v to the right    

The correct answer is: 0.6v to the left

Related Questions to study

General
physics-

Find the percentage difference between the geometrical and magnetic lengths?

Find the percentage difference between the geometrical and magnetic lengths?

physics-General
General
physics-

In electromagnets relation between strength and current is.......

In electromagnets relation between strength and current is.......

physics-General
General
physics-

Which metal is used for making permanent magnets?

Which metal is used for making permanent magnets?

physics-General
parallel
General
physics-

N-pole of magnet attracts S-pole of .................... magnet

N-pole of magnet attracts S-pole of .................... magnet

physics-General
General
physics-

The density of lines of force is maximum at .....................

The density of lines of force is maximum at .....................

physics-General
General
physics-

Lines of force run from ___ to ___ outside the magnet

Lines of force run from ___ to ___ outside the magnet

physics-General
parallel
General
physics-

Study of earth’s magnetic field is called ...........magnetism

Study of earth’s magnetic field is called ...........magnetism

physics-General
General
physics-

................... need electric current

................... need electric current

physics-General
General
physics-

Opposite poles of magnets ................................ each other

Opposite poles of magnets ................................ each other

physics-General
parallel
General
physics-

........................ magnet is where isolated pole is required

........................ magnet is where isolated pole is required

physics-General
General
physics-

The speed of sound in mm/ns is ........... (Given speed of sound is 330 m / sec )

The speed of sound in mm/ns is ........... (Given speed of sound is 330 m / sec )

physics-General
General
physics-

If ‘X’ represents kg-m/s and ‘Y’ represents g cm/s then X = ....................Y

If ‘X’ represents kg-m/s and ‘Y’ represents g cm/s then X = ....................Y

physics-General
parallel
General
physics-

A liquid is taken in a density bottle and its mass is determined as 20 g whereas mass of water whose volume is equal to that of liquid at 4°C is 10 g. Then the density of liquid is

A liquid is taken in a density bottle and its mass is determined as 20 g whereas mass of water whose volume is equal to that of liquid at 4°C is 10 g. Then the density of liquid is

physics-General
General
physics-

A density bottle weighs 24 g when filled with water and 31 g when filled with a liquid of density 8 to the power of g end exponent divided by c c.Then the mass of the density bottle is ...............

A density bottle weighs 24 g when filled with water and 31 g when filled with a liquid of density 8 to the power of g end exponent divided by c c.Then the mass of the density bottle is ...............

physics-General
General
physics-

The mass of a metal is 1500 kg and is having a density of 12000 k g divided by m to the power of 3 end exponent, then the volume is ................

The mass of a metal is 1500 kg and is having a density of 12000 k g divided by m to the power of 3 end exponent, then the volume is ................

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.