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A. Halved
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B. Remains the same
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C. Doubled
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D. Becomes four times
Explanation
The horizontal distance or range is given by:
R=ucos(θ)⋅T
where = initial velocity, = angle of projection, and = time of flight.
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If the range is doubled but the initial velocity and angle remain the same, it implies horizontal velocity is increased, not the time.
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However, if the range is doubled due to an angle change (e.g., using complementary angles), the time of flight may remain unchanged.
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A. The horizontal velocity is 15m/s while vertical velocity is 20m/s downwards
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B. The horizontal velocity is 15m/s while vertical velocity is 0m/s
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C. The horizontal velocity is 30m/s while vertical velocity is 20m/s downwards
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D. The horizontal velocity is 15m/s while vertical velocity is 15m/s downwards
Explanation
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A. Independent of each other
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B. Dependent on each other
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C. Correlated with each other
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D. Associated with each other
Explanation
In projectile motion, the vertical and horizontal components are treated separately.
The horizontal motion is uniform (constant velocity), while the vertical motion is subject to gravitational acceleration.
پروجیکٹائل موشن کے دوران، رفتار کا افقی جزو؟
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A. Changes with time
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B. Increases with time
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C. Becomes zero
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D. Remains constant
Explanation
During projectile motion, the horizontal component of velocity "remains constant."
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A. 85m
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B. None of these
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C. 90m
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D. 95m
Explanation
The range (R) of a projectile is given by:
R = (u² * sin(2θ)) / g
where u is the initial velocity, θ is the projection angle, and g is the acceleration due to gravity.
R = (30² * sin(2*45)) / 10
= (900 * sin(90)) / 10
= 900 / 10
= 90 m
گولیاں بیک وقت، افقی طور پر اور ایک ہی جگہ سے مختلف رفتار کے ساتھ بھری جاتی ہیں۔ کون سی گولی پہلے زمین پر لگے گی؟
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A. The faster one
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B. Depends on their mass
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C. The slower one
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D. Both will reach simultaneously
Explanation
Both bullets will hit the ground simultaneously.
The horizontal speed and mass do not affect the time to fall; only gravity influences vertical motion.
Since they are fired from the same height, they will experience the same vertical acceleration and hit the ground at the same time.
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