A projectile fired with initial velocity u at some angle θ has a range R. If the initial velocity be doubled at the same angle of projection, then the range will be

(1) 2 R

(2) R/2

(3) R

(4) 4 R

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Projectile motion
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If the initial velocity of a projectile be doubled, keeping the angle of projection same, the maximum height reached by it will

(1) Remain the same

(2) Be doubled

(4) Be halved

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Projectile motion
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In the motion of a projectile freely under gravity, its

(1) Total energy is conserved

(2) Momentum is conserved

(3) Energy and momentum both are conserved

(4) None is conserved

Concept Questions :-

Projectile motion
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The range of a projectile for a given initial velocity is maximum when the angle of projection is 45°. The range will be minimum, if the angle of projection is

(1) 90°

(2) 180°

(3) 60°

(4) 75°

Concept Questions :-

Projectile motion
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A ball is thrown upwards and it returns to ground describing a parabolic path. Which of the following remains constant

(1) Kinetic energy of the ball

(2) Speed of the ball

(3) Horizontal component of velocity

(4) Vertical component of velocity

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Projectile motion
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At the top of the trajectory of a projectile, the directions of its velocity and acceleration are

(1) Perpendicular to each other

(2) Parallel to each other

(3) Inclined to each other at an angle of 45°

(4) Antiparallel to each other

Concept Questions :-

Projectile motion
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An object is thrown along a direction inclined at an angle of 45° with the horizontal direction. The horizontal range of the particle is equal to

(1) Vertical height

(2) Twice the vertical height

(3) Thrice the vertical height

(4) Four times the vertical height

Concept Questions :-

Projectile motion
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The height y and the distance x along the vertical plane of a projectile on a certain planet (with no surrounding atmosphere) are given by $y=\left(8t-5{t}^{2}\right)$ meter and x = 6t meter, where t is in second. The velocity with which the projectile is projected is

(1) 8 m/sec

(2) 6 m/sec

(3) 10 m/sec

(4) Not obtainable from the data

Concept Questions :-

Projectile motion
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The range of a particle when launched at an angle of 15° with the horizontal is 1.5 km. What is the range of the projectile when launched at an angle of 45° to the horizontal

(1) 1.5 km

(2) 3.0 km

(3) 6.0 km

(4) 0.75 km

Concept Questions :-

Projectile motion
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Difficulty Level:

Galileo writes that for angles of projection of a projectile at angles $\left(45+\theta \right)$ and $\left(45-\theta \right)$, the horizontal ranges described by the projectile are in the ratio of (if $\theta \le 45$

(1) 2 : 1

(2) 1 : 2

(3) 1 : 1

(4) 2 : 3

Concept Questions :-

Projectile motion