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Laws of Motion question

2008 · Shift 1 · Q68
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Laws of Motion question

2008 · Shift 1 · Q68

JEE AdvancedPhysicsLaws of MotionMCQ+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 - Laws of Motion Question 5 English ComprehensionThe speed of the block at point C, immediately before it leaves the second incline is
  1. A
    120\sqrt{120}120​ m/s
  2. B
    105\sqrt{105}105​ m/s
  3. C
    90\sqrt{90}90​ m/s
  4. D
    75\sqrt{75}75​ m/s
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