Questions

Unbalanced forces are the forces which causes change in motion of the object. It sets the object in motion and may cause the object to move. If the object is already in motion, it changes the speed and direction of the object.

The Earth has four major systems or spheres. These systems are

 1. The geosphere,

 2. The hydrosphere,

 3. The atmosphere, and 

4. The biosphere.

The biosphere is the system where we belong.

Since, the sentence starts talking about the ultimate hope; it should be followed by the statement that is talking about the hope. So, only statement Q connects with the given statement. Also, in the options there is a single option with starting statement as Q. The correct formation would be, ‘The ultimate hope that the destructive nature of weapons will force the nations to give up war has not been fulfilled.’