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Laws of Motion question

2008 · Shift 1 · Q67
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Laws of Motion question

2008 · Shift 1 · Q67

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 4 English ComprehensionThe speed of the block at point B immediately after it strikes the second incline is
  1. A
    60\sqrt{60}60​ m/s
  2. B
    45\sqrt{45}45​ m/s
  3. C
    30\sqrt{30}30​ m/s
  4. D
    75\sqrt{75}75​ m/s
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