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AP EAMCET202423 May 2024Morning ShiftPhysicsMotion in Two DimensionsActual

A bowling machine placed at a height h above the earth surface releases different balls with different angles but with same velocity 10 3 ~ms ⁻¹ . All these balls landing velocities make angles 30^ or more with horizontal. Then the height ' h ' (in meters) (acceleration due to gravity =10 ~ms ⁻² )

Options

  1. A15
  2. B12
  3. C10
  4. D5

Correct answer

D. 5

Step-by-step solution

aligned & u_x=v_x=10 3 m s⁻¹ & t= 2 h g & v_y=u_y+g t=0+g 2 h g & 30^ = v_y v_x = g 2 h g 10 3 = 2 g h 10 3 & h=5 m aligned

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