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Online Tests
ECAT Physics Chapter 3 Motion and Force Online Test MCQs With Answers
Question # 1
What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
Choose an answer
4 : 5
7 : 9
16 : 25
1 : 1
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Question # 2
If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s
2
)
Choose an answer
9.8 m/s
19.6 m/s
39.2 m/s
98.0 m/s
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Question # 3
A 5 kg mass is falling freely, the force acting on, it will be
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19.6 N
9.8 N
5 N
Zero
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Question # 4
Distance covered by a freely falling body in 2 sec will be
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4.9 m
19.6 m
29.2 m
44.1 m
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Question # 5
At the top of the trajectory of a projectile the acceleration is
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The maximum
The minimum
Zero
g
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Question # 6
Slope of velocity time graph represents:
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Acceleration
Speed
Torque
Work
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Question # 7
A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?
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Both hit the ground at the same veloctiy
Both hit the ground at the same speed
The change of velocity during the path for both balls is the same
The change of speed during the path for both balls is the same
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Question # 8
A certain force gives an acceleration of 2 m/sec
2
to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:
Choose an answer
0.5 m/sec
2
5 m/sec
2
1.5 m/sec
2
9.8 m/sec
2
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Question # 9
The motion in a plane is the motion in
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one dimension
two dimension
three dimension
four dimension
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Question # 10
A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is
Choose an answer
2100 m/s
2
1400 m/s
2
700 m/s
2
400 m/s
2
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Question # 11
The velocity of a projectile is maximum
Choose an answer
at the point of projection
just before striking the ground
at none of them
at both of them
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Question # 12
The magnitude of the force producing an acceleration of 10 m/sec
2
in a body of mass 500 grams is:
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3 N
4 N
5 N
6 N
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Question # 13
Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60
° is
Choose an answer
22 m
6 m
33 m
7.8 m
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Question # 14
Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s
2
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0.064 m
640 cm
64 cm
64 m
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Question # 15
The three equation of motions are useful only for
Choose an answer
linear motion with increasing acceleration
line motion with uniform acceleration
linear motion with zero acceleration
linear motion with varying acceleration
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Question # 16
A rocket carries its own fuel in the form of
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liquid only
liquid or solid
liquid and solid
liquid or solid and oxygen
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