[{"id":119362,"question":"Suppose the water flows out from a pipe at 3kg s<sup>-1</sup>and its velocity changes from 5m s<sup>-1</sup>to zero on striking the wall, then the force exerted by water on wall will be","choices":[{"text":"5 N","value":"A"},{"text":"10 N","value":"B"},{"text":"15 N","value":"C"},{"text":"20 N","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119360,"question":"A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is","choices":[{"text":"Zero","value":"A"},{"text":"Infinity","value":"B"},{"text":"V","value":"C"},{"text":"2 V","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110322,"question":"Which quantity has the same units as impulse","choices":[{"text":"force","value":"A"},{"text":"work","value":"B"},{"text":"linear momentum","value":"C"},{"text":"acceleration","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110321,"question":"The product of force and time is called","choices":[{"text":"acceleration","value":"A"},{"text":"linear momentum","value":"B"},{"text":"angular momentum","value":"C"},{"text":"impulse","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110319,"question":"The entity which measures the quantity of motion in a body is called","choices":[{"text":"force","value":"A"},{"text":"energy","value":"B"},{"text":"momentum","value":"C"},{"text":"power","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110317,"question":"According to the law of conservation of linear momentum, the total linear momentum of an isolated system","choices":[{"text":"increases","value":"A"},{"text":"decreases with time","value":"B"},{"text":"remains constant","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110316,"question":"The expression F x t is called impulse if the time 't' is","choices":[{"text":"zero","value":"A"},{"text":"very large","value":"B"},{"text":"very small","value":"C"},{"text":"infinite","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110315,"question":"In the expression F x t, the force F is","choices":[{"text":"total force","value":"A"},{"text":"instantaneous force","value":"B"},{"text":"average force","value":"C"},{"text":"all of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110314,"question":"The quantity F x t is called as","choices":[{"text":"momentum","value":"A"},{"text":"velocity","value":"B"},{"text":"acceleration","value":"C"},{"text":"impulse","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110313,"question":"Rate of change of momentum is called","choices":[{"text":"Impulse","value":"A"},{"text":"Force","value":"B"},{"text":"Torque","value":"C"},{"text":"Momentum","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110312,"question":"The SI units of momentum is","choices":[{"text":"kg m s<sup>-2</sup>","value":"A"},{"text":"kg ms","value":"B"},{"text":"kg m s<sup>2</sup>","value":"C"},{"text":"N-s","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110311,"question":"The direction of the linear momentum is the direction of","choices":[{"text":"speed","value":"A"},{"text":"velocity","value":"B"},{"text":"weight","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110310,"question":"Linear momentum is a","choices":[{"text":"fixed quantity","value":"A"},{"text":"constant quantity","value":"B"},{"text":"scalar quantity","value":"C"},{"text":"vector quantity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110309,"question":"The linear momentum of the body is defined as","choices":[{"text":"p=ma","value":"A"},{"text":"p=1/2ma","value":"B"},{"text":"p=mv","value":"C"},{"text":"p=1/2mv","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110308,"question":"If the objects of different masses move with the same velocity, then it is more difficult to stop the","choices":[{"text":"lighter of the two","value":"A"},{"text":"massive of the two","value":"B"},{"text":"any one of them","value":"C"},{"text":"both of them","value":"D"},{"value":"E"}],"correctAnswer":2}]