Projectile Motion MCQs | Projectile Motion Multiple Choice Questions and Answers

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Questions
1 A ball is projected with velocity 10 m/sec at angle of 30o with the horizontal surface. The speed of the ball after 1 second will be (Use g=10m/sec2)
A 5 m/sec
B 20 m/sec
C 8 m/sec
D 10 m/sec

Answer: 10 m/sec
2 A ball is projected with velocity 10 m/sec at angle of 30o with the horizontal surface. The range of the projectile is
A 10 m
B 10√3m
C 20√3m
D 40√3m

Answer: 20√3m
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3 A stone is projected horizontally with a velocity 9.8m/s from a tower of height 100m. Its speed 1 s after projection is
A 9.8m/s
B 4.9m/s
C 9.8√2m/s
D 4.9√2m/s

Answer: 9.8√2m/s
4 An aeroplane flying horizontally at an altitude of 490m with a speed of 180km/h drops a bomb. The horizontal distance at which it hits the ground is(g=9.8m/s²)
A 500m
B 1000m
C 250m
D None of the above

Answer: 500m
5 Two particles are projected with same velocity but at angles of projection (45-θ) and (45+θ). Then their horizontal ranges are in the ratio of
A 1:2
B 2:1
C 1:1
D 90/2 θ

Answer: 1:1
6 The motion of a projectile is described by the equation y=ax - bx². The range of projectile is
A a²/b²
B a/2b
C a/b
D None Of The Above

Answer: a/b
7 For a projectile fired with a certain velocity, the Maximum possible Range and the Maximum height attainable are related as
A Rmax=2Hmax
B Rmax=Hmax/2
C Rmax=3Hmax
D None Of The Above

Answer: Rmax=2Hmax
8 A ball projected at an angle θ, attains a maximum height H1 and if the ball is projected at angle of (90-θ) and the maximum height attained by the ball is H2. Then the range of projectile will be
A R= √H1H2
B R= √H1H2 /2
C R= 3√H1H2
D None of these

Answer: R= 3√H1H2
9 A ball is projected with velocity 10 m/sec at angle of 30o with the horizontal surface. The maximum height attained by the projectile is
A 5 m
B 10 m
C 15 m
D 20 m

Answer: 5 m
10 A ball is projected with velocity 10 m/sec at angle of 30o with the horizontal surface. The time taken by ball to reach the ground is
A 1 sec
B 2 sec
C 3 sec
D None Of The Above

Answer: 2 sec
11 A ball is projected with velocity 10 m/sec at angle of 30o with the horizontal surface. The angle made by the line joining point of projection with the point of maximum height is
A tanˉ¹ 2/√3
B tanˉ¹ 1/2√3
C tanˉ¹ √3
D tanˉ¹ 1/√3

Answer: tanˉ¹ 1/2√3
12 The angle of projection for the range of projectile to be equal to its maximum height is
A θ=tanˉ¹ (2)
B θ=tanˉ¹ (3)
C θ=tanˉ¹ (4)
D None of the above

Answer: θ=tanˉ¹ (4)
13 A body is projected with kinetic energy E so as to attain maximum horizontal range. Its potential energy at the highest point is
A E
B E/2
C 2E
D √2E

Answer: √2E
14 A gun with a muzzle velocity of 500 m/s shoots a bullet at a target 50m away. To hit the target the gun should be aimed (g=10m/s²)
A directly towards the target along the line joining the gun and bird
B 10 cm high above the target
C 5 cm high above the target
D none of these

Answer: 5 cm high above the target
15 For a body thrown horizontally from the top of a tower,
A the time of flight depends on both h and v
B the horizontal Range depends only on v but not on h
C the horizontal Range depends on both v and h
D None of these

Answer: the horizontal Range depends on both v and h
16 A body is projected horizontally from a height of 78.4m with a velocity 10m/s. The angle made by velocity vector with x axis after
A 4 seconds is
B tanˉ¹3
C tanˉ¹4
D tanˉ¹5

Answer: tanˉ¹3
17 A body is projected vertically downwards with the velocity 5m/s from a height of 60m. Its time of descent is
A 2s
B 3s
C 4s
D 5s

Answer: 3s
18 A body is thrown with the velocity (4i + 3j) m/s. Its maximum height is (g=10m/s²)
A 2.5m
B 0.8m
C 0.9m
D 0.45m

Answer: 0.45m
19 A body projected with velocity 30m/s reaches its maximum height in 1.5s. Its range is (g=10m/s²)
A 45m
B 108m
C 45√3m
D 54m

Answer: 45√3m
20 The acceleration of a projectile relative to another projectile is
A -g
B g
C 0
D None Of The Above

Answer: 0

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