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NEET Physics · Collision & Variable Mass · Set 4 (Q91-93)

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  1. 91.
    A block of mass 0.50 kg is moving with a speed of 2.00 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is :
    1. (1)1.00 J
    2. (2)0.67 J
    3. (3)0.34 J
    4. (4)0.16 J
  2. 92.
    During inelastic collision between two objects, which of the following quantity always remains conserved?
    1. (1)Total linear momentum
    2. (2)Total kinetic energy
    3. (3)Speed of each body
    4. (4)Total mechanical energy
  3. 93.
    A ball of mass 200 g rests on a vertical post of height 20 m. A bullet of mass 10 g, travelling in horizontal direction, hits the center of the ball After collision both travels independently. The ball hits the ground at a distance 30 m and the bullet at a distance of 120 m from the foot of the post. The value of initial velocity of the bullet will be (if g= 10 m/):
    1. (1)120 m/s
    2. (2)60 m/s
    3. (3)400 m/s
    4. (4)360 m/s