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KCET2019PhysicsMotion in Two Dimensions

The trajectory of a projectile projected from origin is given by the equation ( y=x- 2 x² 5 ). The initial velocity of the projectile is

Options

  1. A( 25 ~ms ⁻¹ )
  2. B( 2 5 ~ms ⁻¹ )
  3. C( 5 2 ~ms ⁻¹ )
  4. D( 5 ~ms ⁻¹ )

Correct answer

D. ( 5 ~ms ⁻¹ )

Step-by-step solution

( (D) ) [ array l y=x- 2 x² 5 =1 =45^ g 2 u² ² = 2 5 10 2 u² 1 2 = 2 5 u²= 50 2 =25 u=5 m s⁻¹ array ]

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