[{"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},{"id":110307,"question":"Earth is considered to be","choices":[{"text":"a non-inertial frame","value":"A"},{"text":"an inertial frame","value":"B"},{"text":"an accelerated frame","value":"C"},{"text":"none of the above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110305,"question":"When a person jumps off the ground, the reaction force of the ground is","choices":[{"text":"greater than the weight of the person","value":"A"},{"text":"smaller than the weight of the person","value":"B"},{"text":"equal to the weight of the person","value":"C"},{"text":"zero","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110304,"question":"In equation F=ma, then mass 'm' is","choices":[{"text":"rest mass","value":"A"},{"text":"variable mass","value":"B"},{"text":"inertial mass","value":"C"},{"text":"gravitational mass","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110302,"question":"The second law gives the relationship between","choices":[{"text":"mass and velocity","value":"A"},{"text":"force and acceleration","value":"B"},{"text":"velocity and acceleration","value":"C"},{"text":"mass and weight","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110301,"question":"Laws of motion are not valid in a system which is","choices":[{"text":"inertial","value":"A"},{"text":"non-interial","value":"B"},{"text":"at rest","value":"C"},{"text":"moving with uniform velocity","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110299,"question":"What must be changing when a body is accelerating uniformly?","choices":[{"text":"the force acting on a body","value":"A"},{"text":"the velocity of the body","value":"B"},{"text":"the mass of the body","value":"C"},{"text":"the speed of the body","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110297,"question":"When a force is applied on a body, several effects are possible Which of the following effect could not occur?","choices":[{"text":"the body rotates","value":"A"},{"text":"the body speeds up","value":"B"},{"text":"the mass of the body decreases","value":"C"},{"text":"the body changes its direction","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110295,"question":"For a fixed force, larger is the mass of a body the","choices":[{"text":"greater is its acceleration","value":"A"},{"text":"smaller is its acceleration","value":"B"},{"text":"smaller is its weight","value":"C"},{"text":"zero is its acceleration","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110293,"question":"Inertia mass and gravitational mass are","choices":[{"text":"opposite","value":"A"},{"text":"identical","value":"B"},{"text":"identical when there is no friction","value":"C"},{"text":"all of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110291,"question":"The effect of applying a force on a moving body is to change","choices":[{"text":"its direction of motion only","value":"A"},{"text":"its speed of motion only","value":"B"},{"text":"both the direction and speed of motion","value":"C"},{"text":"its inertia only","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110289,"question":"Inertial frame of references are those frame of references which are moving with","choices":[{"text":"increasing velocity","value":"A"},{"text":"decreasing velocity","value":"B"},{"text":"constant velocity","value":"C"},{"text":"all of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110287,"question":"The mass of the object is a quantities measure of its","choices":[{"text":"speed","value":"A"},{"text":"velocity","value":"B"},{"text":"acceleration","value":"C"},{"text":"inertia","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110285,"question":"A 5 kg mass is falling freely, the force acting on, it will be","choices":[{"text":"19.6 N","value":"A"},{"text":"9.8 N","value":"B"},{"text":"5 N","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110284,"question":"The discuss used by athlete has a mass of 1 kg, its weight in newton is","choices":[{"text":"9.8 N","value":"A"},{"text":"80 N","value":"B"},{"text":"98 N","value":"C"},{"text":"100 N","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110282,"question":"A mass of 5kg moves with an acceleration of 10m s<sup>-2</sup>force applied is","choices":[{"text":"10<b>N</b>","value":"A"},{"text":"50<b>N</b>","value":"B"},{"text":"2<b>N</b>","value":"C"},{"text":"20<b>N</b>","value":"D"},{"value":"E"}],"correctAnswer":2}]