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Online Tests
Physics ECAT Pre Engineering Chapter 3 Motion and Force Online Test MCQs With Answers
Question # 1
A body is thrown from a height h with speed u, it hits the ground with speed V
Choose an answer
The value of V is maximum if the body is thrown vertically downward
The value of V is maximum if the body is thrown vertically upwards
The value of V is minimum if the body is thrown horizontally
The value of V does not depend on the direction of which it is thrown
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Question # 2
The path (or trajectory) described by a projectile is
Choose an answer
a parabola
a hyperbola
a circle
a straight line
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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
When the surfaces are coated with a lubricant, then they
Choose an answer
Stick to each other
Slide upon each other
Roll upon each other
None of these
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Question # 5
A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?
Choose an answer
4 m/s
2 m/s
8 m/s
1 m/s
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Question # 6
In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is
Choose an answer
Mg
1/2 Mg
Zero
2 Mg
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Question # 7
Force is a:
Choose an answer
Scalar quantity
Base quantity
Derived quantity
None of these
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Question # 8
A typical rocket consumes about
Choose an answer
100 kg s
-1
of fuel
1000 kg s
-1
of fuel
10000 kg s
-1
of fuel
100000 kg s
-1
of fuel
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Question # 9
Body 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 # 10
When brakes are applied to a fast moving car, the passengers will be thrown:
Choose an answer
Forward
Backward
Downward
None of these
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Question # 11
An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called
Choose an answer
a rocket
an aeroplane
a projectile
a ballon
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Question # 12
The dimension of linear inertia is:
Choose an answer
MLT
2
ML
°
T
-2
ML
°T
°
MLT
-1
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Question # 13
If the acceleration of a body is not uniform, then velocity-time graph will be:
Choose an answer
Curve
Straight line
Sphere
All of these
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Question # 14
A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is
Choose an answer
24/13
10/3
3
4,8
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Question # 15
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 # 16
Which one of the following is dimensionless.
Choose an answer
Acceleration
Velocity
Density
Angle
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