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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
Rate of change of momentum is called
Choose an answer
Impulse
Force
Torque
Momentum
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Question # 3
Acceleration produced in a body by the force varies
Choose an answer
inversely as the applied force
directly as the applied force
directly as the mass of the body
none of them
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Question # 4
Distance covered by a freely falling body in 2 sec will be
Choose an answer
4.9 m
19.6 m
29.2 m
44.1 m
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Question # 5
One KWh is equal to:
Choose an answer
3.6 x 10
2
J
3.6 KJ
3.6 x 10
1
KJ
3.6 MJ
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Question # 6
The linear momentum of the body is defined as
Choose an answer
p=ma
p=1/2ma
p=mv
p=1/2mv
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Question # 7
Bodies which falls freely under gravity provides good example of motion under:
Choose an answer
Uniform acceleration
Non-uniform acceleration
Uniform velocity
None of these
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Question # 8
When two protons are brought closer potential energy of both of them:
Choose an answer
Increases
Decreases
Remains same
None of these
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Question # 9
One newton is a force that produces an acceleration of 0.5 m/sec
2
in a body of mass:
Choose an answer
2 Kg
3 Kg
4 Kg
8 Kg
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Question # 10
If the acceleration of a body is negative, then slope of the velocity-time graph will be:
Choose an answer
Zero
Positive
Negative
Infinity
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Question # 11
A projectile on its path gets divided into two pieces at its highest point. Which is true?
Choose an answer
Momentum increases
Momentum decreases
Kinetic energy increases
Kinetic energy decreases
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Question # 12
A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is
Choose an answer
m
2 m
4 m
Infinity
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Question # 13
Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s
2
Choose an answer
0.064 m
640 cm
64 cm
64 m
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Question # 14
A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is
Choose an answer
60 kg wt
72 kg wt
48 kg wt
Zero
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Question # 15
A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
Choose an answer
0.15 x 10
-3
Ns
0.98 x 10
-3
Ns
1.5 x 10
-3
Ns
2.5 x 10
-3
Ns
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Question # 16
Ethanol (alcohol) as a type of:
Choose an answer
Electric fuel
Bio fuel
Nuclear fuel
None of these
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