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Online Tests
ECAT Physics Chapter 3 Motion and Force Online Test MCQs With Answers
Question # 1
The artillery shells travel along parabolic paths under the influence of
Choose an answer
magnetic field
electric field
electromagnetic field
gravitational field
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Question # 2
The direction of velocity is along the direction of
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distance
displacement
acceleration
all of them
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Question # 3
Earth is considered to be
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a non-inertial frame
an inertial frame
an accelerated frame
none of the above
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Question # 4
Laws of motion are not valid in a system which is
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inertial
non-interial
at rest
moving with uniform velocity
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Question # 5
The path followed by the projectile is known as:
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Cycle
Hyperbola
Trajectory
Route
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Question # 6
The linear momentum of the body is defined as
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p=ma
p=1/2ma
p=mv
p=1/2mv
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Question # 7
The distance covered by a body in unit time is called.
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Displacement
speed
Velocity
Both B and C
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Question # 8
The dimension of linear inertia is:
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MLT
2
ML
°
T
-2
ML
°T
°
MLT
-1
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Question # 9
During the upward motion of the projectile, the vertical component of velocity.
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Decreases
Increases
Remains constant
None of these
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Question # 10
Change in momentum is one second called.
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Impulse
Force
Energy
Work
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Question # 11
The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90
° with the force of the smaller magnitude, then their magnitudes are
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3, 15
4, 14
5, 13
6, 12
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Question # 12
Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
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The faster one
Depends on their mass
The slower one
Both will reach simultaneously
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Question # 13
If d is the displacement of the body in time t, then its average velocity will be
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V
av
=
d
x t
V
av = t/
d
V
av = d/t
V
av =
d
/t
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Question # 14
If the objects of different masses move with the same velocity, then it is more difficult to stop the
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lighter of the two
massive of the two
any one of them
both of them
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Question # 15
A railway engine (mass 10
4
kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is
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3,600 N
7,200 N
10,000 N
100,000 N
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Question # 16
An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called
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a rocket
an aeroplane
a projectile
a ballon
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