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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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=(8t5t2) 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

Subtopic:  Projectile Motion |
 67%
From NCERT
PMT - 1981
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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

Subtopic:  Projectile Motion |
 80%
From NCERT
PMT - 1982
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A projectile thrown with a speed v at an angle θ has a range R on the surface of earth. For same v and θ, its range on the surface of moon will be (acceleration due to gravity on moon=g6):

(1) R/6

(2) 6 R

(3) R/36

(4) 36 R

Subtopic:  Projectile Motion |
 83%
From NCERT
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A ball is projected with kinetic energy E at an angle of 45° to the horizontal. At the highest point during its flight, its kinetic energy will be 

(1) Zero

(2) E2

(3) E2

(4) E

Subtopic:  Projectile Motion |
 62%
From NCERT
PMT - 1994
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At the top of the trajectory of a projectile, the magnitude of the acceleration is

(1) Maximum

(2) Minimum

(3) Zero

(4) g

Subtopic:  Projectile Motion |
 76%
From NCERT
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A body is projected at such an angle that the horizontal range is three times the greatest height. The angle of projection is 

(1) 25o8'

(2) 33o7'

(3) 42o8'

(4) 53o8'

Subtopic:  Projectile Motion |
 68%
From NCERT
AIIMS - 1998
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Two bodies are projected with the same velocity. If one is projected at an angle of 30° and the other at an angle of 60° to the horizontal, the ratio of the maximum heights reached is 

(1) 3 : 1

(2) 1 : 3

(3) 1 : 2

(4) 2 : 1

Subtopic:  Projectile Motion |
 84%
From NCERT
AIIMS - 2001
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