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The force in the member (1) of the truss shown in the figure is
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Important Questions on Sets, Relations and Functions

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Which among the following is the correct statement?
A. When an object is thrown upwards, then in any case whether going upwards or coming downwards its speed will remain the same. 
B. The weight of any object cannot be zero. 
 

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If the velocity of a body is doubled its momentum _____.
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A force may change ___ of an object. 
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If two forces 10N and 5N are applied on an object in the same direction, then what will be the total force applied on the object? 
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What is the rate of doing work?
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Odometer is used to measure _______:
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A body of mass 8 kg is moving with a velocity of 4 m/s, find the momentum.
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When a car starts suddenly from rest, the people are sitting inside the car more backward. This event is an example of:
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After the explosion of a shell, many pieces fly off in different directions. In such a case, what is conserved? 
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Which of the following is the kinetic energy? 
a. bullet from the gun.
b. a railway engine at a fast speed.
c. the motion of an ordinary pendulum. 
 
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How much force will be used to displace an object of 60kg to a distance of 4m? 
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The angle between displacement and force applied when no work is done is:
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_____ is caused due to irregularities between two surfaces.
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For an object, potential energy at a height is known as _____.
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______ is caused due to irregularities between two surfaces:
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If a girl weighing 40N climbs up a rope with the force of 160W for 20seconds, then what height will she climb? 
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As long as an unbalanced force is applied to a body, its continues to change continuously:

 

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What is the energy possessed by a body due to its motion is called?

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A body rolling down on a hill has _____:
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A particle in the medium completes 40 vibrations in 2.5 s. The frequency of the wave is ____: