Physics_ Motion in Two Dimension

1. The motion on a curved path, when on component of velocity is constant & other is variable is called:

a) Circular motion
b) Vibratory motion
c) projectile motion
d) Transnational motion
2. Every point on a rotating body has the same:

a) Linear velocity
b) Angular velocity
c) Linear acc
d) Tangential velocity
3. Due to presence of air resistant, the total time of the light of projectile:

a) Remain the same
b) Decrease
c) Becomes zero
d) Increases
4. A projectile is fired with the initial velocity 90 m/s to it a a ground level target. its maximum horizontal range will be:

a) 9.2 m
b) 826.5 m
c) 413 m
d) 81 m
5. In projectile motion, a body moves with:

a) Constant vertical comp.
b) Both changing comp.
c) Horizontal comp changing but vertical comp constant
d) Constant horizontal comp
6. If a projectile is a launched at 45deg with velocity 100 m/s it hit the target, it will have double the target of its velocity is:

a) 141.4 m/s
b) 200 m/s
c) 173 m/s
d) 400 m/s
7. If a projectile is thorn at the angle of 35deg, it hits a certain target it will have the same, if it is throw at angle of:

a) 45 deg
b) 55 deg
c) 10 deg
d) 70 deg
8. A body is moving along a cycle with increasing speed to possess:

a) Tangential acceleration
b) Centripetal acceleration
c) Both acceleration
d) No acceleration
9. One radian is equal to:

a) 57.3 deg
b) 0.0017 deg
c) 35.7 deg
d) 1 deg
10. The angle b/w centripetal acceleration and tangential acceleration is:

a) 0 deg
b) 90 deg
c) 180 deg
d) 45 deg
11. Maximum height of a projectile depends on:

a) Angle of projection
b) Both angle and velocity
c) velocity of projection
d) None of these
12. S.I unit of angular velocity is:

a) m /sec
b) rad /sec
c) deg/sec
d) rev/sec
13. When a body moves along the circumference of a circle with uniform speed takes place in its:

a) Linear velocity
b) Tangential acc
c) Both
d) Not possible
14. When a body moves along the circumference of a circle with uniform speed, changes takes place in its:

a) Liner velocity
b) Tangential acc
c) Both
d) Not possible
15. When a body moves along the projectile path, which component of its velocity does not changes:

a) Horizontal
b) Vertical
16. The range of Ghori missile is:

a) 1500 km
b) 200 km
c) 2500 km
17. When a body is thrown vertical upward, it is a case of:

a) Free fall motion
b) Projectile motion
c) Under gravity motion
d) Vibratory motion
18. When a particle moves in a circle, the angle b/w linear velocity and angular velocity is always:

a) 0 degree
b) 180 degree
c) 90 degree
d) 45 degree
19. A particle is moving with a uniform speed in a circle has:

a) Zero acceleration
b) Maximum acceleration
c) Uniform acceleration
d) Variable acceleration
20. Relation b/w linear velocity & angular velocity is:

a) V = rE
b) W = r v
c) r = v x w
d) V = r / w
21. Every point a rotating body has the same:

a) Linear velocity
b) Angular velocity
c) Angular momentum
d) Linear velocity
22. When a body is thrown vertically upward it is a case of:

a) Projectile motion
b) Free fall motion
c) Under gravity
d) S.H.M
23. A body is moves in a circle with increasing speed. it possess:

a) Tangential acceleration
b) Angular acceleration
c) Centripetal acceleration
d) Tangential & centripetal acceleration both
24. If the initial speed of projectile in doubled its range will

a) Double
b) Increase 4 time
c) Decrease by 1 half
d) Becomes one fourth
25. When an object moves with constant speed in a circle it has

a) Centripetal acc
b) No centripetal acc
c) Decrease by one half
d) Becomes one fourth
26. All points of a rotating body have the same value

a) Linear displacement
b) Linear acc
c) Linear linear speed
d) Angular velocity
27. A projectile which is fired horizontal has its speed maximum at the moment of

a) Projection
b) Hit the ground
c) Both of these
d) None of these
28. The projectile motion is a super position of two:

a) Circular motion
b) Simple harmonic motion
c) One dimensional
d) None of these
29. Projectile motion is:

a) One dimensional
b) two dimensional
c) Three dimensional
d) Multi-dimensional
30. For projectile motion:

a) A body must be thrown vertically
b) A body must have constant horizontal velocity
c) Body must fall under the action of gravity
d) Body must have a constant horizontal velocity & at the same time it must fall freely under the action of gravity
31. Vertically component of the velocity of a projectile is zero at:

a) The point of projection
b) At the target
c) At the highest point
d) None of these
32. Velocity of a projectile is maximum at:

a) At the highest point
b) The point of projection
c) The target point
d) A & B
e) B & C
33. Horizontal range of a projectile depends upon:

a) Initial velocity
b) Angle of projection
c) Weight of projection
d) A& B
34. If air resistance is not negligible then:

a) Horizontal range of projectile decrease
b) Time of flight becomes short
c) Vertical range decrease
d) A & B
e) A & C
35. Horizontal range of a projectile is maximum when its fired at an angle of

a) 30 deg
b) 45 deg
c) 60 deg
d) 90 deg
36. In order to hit a mobile is better to fire a projectile at smaller of the two possible angle because

a) Trajectory of the projectile will be flat
b) The time of the flight will be short
c) Effect of the air resistant will be negligible
37. The trajectory of a projectile is

a) A straight line
b) Circle
c) Hyperbole
d) Parabola
38. When distance covered by a body along a circular path is equal to radius of the circular path then the angle subtend at the center will be equal to

a) 1 degree
b) 1 radian
c) 1 st radian
d) 1 minute
39. For a complete revolution the angular displacement of the body will be :

a) 3.142 radian
b) 2 x (3.142) radian
c) 3.142 / 2 radian
d) 3.142 / 4 radian
40. Centripetal acceleration is due to

a) A change in magnitude of velocity
b) A change in direction of velocity
c) A change in unit of velocity
d) A change in magnitude & direction of velocity
 
 




 
 
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