An aeroplane moving horizontally with a speed of 720 km/h drops a food pocket while flying at a height of 396.9 m. The time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/sec2)

(1) 3 sec and 2000 m

(2) 5 sec and 500 m

(3) 8 sec and 1500 m

(4) 9 sec and 1800 m

Subtopic:  Projectile Motion |
 71%
From NCERT
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A particle (A) is dropped from a height and another particle (B) is thrown in the horizontal direction with a speed of 5 m/sec from the same height. The correct statement is:

(1) Both particles will reach at ground simultaneously

(2) Both particles will reach at ground with same speed

(3) Particle (A) will reach at ground first with respect to particle (B)

(4) Particle (B) will reach at ground first with respect to particle (A)

Subtopic:  Projectile Motion |
 70%
From NCERT
PMT - 2002
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A bomber plane moves horizontally with a speed of \(500~\text{m/s}\) and a bomb is released from it. The bomb strikes the ground in \(10~\text{s}\). The angle at which it strikes the ground will be: \((g= 10~\text{m/s}^2)\)
1. \(\tan ^{-1}\left(\frac{1}{5}\right )\)
2. \(\tan \left(\frac{1}{5}\right)\)
3. \(\tan ^{-1}(1)\)
4. \(\tan ^{-1}(5)\)

Subtopic:  Projectile Motion |
 68%
From NCERT
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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

Subtopic:  Projectile Motion |
 78%
From NCERT
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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

(3) Be quadrupled

(4) Be halved

Subtopic:  Projectile Motion |
 84%
From NCERT
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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

Subtopic:  Projectile Motion |
 51%
From NCERT
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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°

Subtopic:  Projectile Motion |
 73%
From NCERT
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A ball is thrown upwards and it returns to the 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

Subtopic:  Projectile Motion |
 81%
From NCERT
PMT - 2001
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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 \(45^\circ\)
4. Antiparallel to each other

Subtopic:  Projectile Motion |
 85%
From NCERT
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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

Subtopic:  Projectile Motion |
 71%
From NCERT
PMT - 1985
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