Motion in Two and Three Dimensions Test Online MCQs

1. For a particle in a uniformly accelerated circular motion

2. If we can throw a ball up to a maximum height H, the maximum horizontal distance to which we can throw it is

3. A body is projected at such angle that the horizontal range is three times the greatest height. The angle of projection is

4. An aeroplane moves 400 m towards the north, 300 m towards west and then its displacement from the initial position is

5. If two projectiles are fired at the angles 30° and 60° respectively then the ratio of their horizontal ranges is

6. The angle between  will be

7. At the uppermost point of a projectile, its velocity and acceleration are at an angle of

8. Rain is falling vertically downwards with a velocity of 3 km/hr. A man walks in the rain with a velocity of 4 km/hr. The rain drop will fall on the man with a velocity of:

9. A stone tied to the end of a string of 80 cm long, is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 sec, then magnitude if acceleration of the same will be

10. A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 rad/sec. Then the centripetal force will be

11. For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is

12. If vector  are perpendicular to each other, then the positive value of a is

13. If a cyclist moving with a speeds of 4.9 m/s on leveled road can take a sharp circular turn of radius 4m, then the coefficient of friction between cycle tyre and road will be

14. A stone to a string is rotated with a uniform speed in a vertical plane. If mass of the stone is m, the length of the string is r and the linear speed of the stone is v, when the stone is at its lowest point, then the tension in the strong will be (g = acceleration due to gravity)

15. Two equal vectors have a resultant equal to either of them, then the angle between them will be