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Work, Energy and Power Test - 69
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Work, Energy and Power Test - 69
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  • Question 1/10
    4 / -1
    A bomb of mass 3.0 kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg. The smaller mass goes at a speed of 80 m/s. The total energy imparted to the two fragments is
    Solutions

  • Question 2/10
    4 / -1
    The spheres A and B masses m1 and m2 respectively collide. A is at rest initially and B is moving with velocity v along x-axis, After collision B has a velocity v/2 in a direction perpendicular to the original direction.The mass A moves after collision in the direction
    Solutions

  • Question 3/10
    4 / -1
    A shell initially at rest explodes into two pieces of equal mass, then the two pieces will
  • Question 4/10
    4 / -1
    A lead ball strikes a wall and falls down, a tennis ball having the same mass and velocity strikes the wall and bounces back. Check the correct statement
    Solutions

  • Question 5/10
    4 / -1
    A sphere collides with another sphere of identical mass. After collision, the two spheres move. The collision is inelastic. Then the angle between the directions of the two spheres is
  • Question 6/10
    4 / -1
    A gun fires a bullet of mass 50 g with a velocity of 30 m sec–1. Because of this the gun is pushed back with a velocity of 1 m sec–1. The mass of the gun is
    Solutions

  • Question 7/10
    4 / -1
    A smooth sphere of mass M moving with velocity u directly collides elastically with another sphere of mass m at rest. After collision their final velocities are V and v respectively . The value of v is
    Solutions

  • Question 8/10
    4 / -1
    A body of mass m having an initial velocity v, makes head on collision with a stationary body of mass M. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when
  • Question 9/10
    4 / -1
    A particle of mass m moving with horizontal speed 6 m/sec as shown in figure. If m << M then for one dimensional elastic collision, the speed of lighter particle after collision will be

    Solutions

  • Question 10/10
    4 / -1
    A shell of mass m moving with velocity v suddenly breaks into 2 pieces. The part having mass m/4 remains stationary. The velocity of the other shell will be
    Solutions

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