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Impulse and Momentum question

2008 · Shift 1 · Q69
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Impulse and Momentum question

2008 · Shift 1 · Q69

JEE AdvancedPhysicsImpulse and MomentumMCQ+3 / −1
A small block of mass M moves on a frictionless surface of an inclined plane, as shown in figure. The angle of the incline suddenly changes from 60 ∘^\circ∘ to 30 ∘^\circ∘ at point B. The block is initially at rest at A. Assume that collisions between the block and the incline are totally inelastic (g = 10 m/s 2^22). IIT-JEE 2008 Paper 1 Offline Physics - Impulse & Momentum Question 5 English ComprehensionIf collision between the block and the incline is completely elastic, then the vertical (upward) component of the velocity of the block at point B, immediately after it strikes the second incline is
  1. A
    30\sqrt{30}30​ m/s
  2. B
    15\sqrt{15}15​ m/s
  3. C
    0
  4. D
    −15-\sqrt{15}−15​ m/s
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