[{"id":161561,"question":"During the upward motion of the projectile, the vertical component of velocity.","choices":[{"text":"Decreases","value":"A"},{"text":"Increases","value":"B"},{"text":"Remains constant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":161560,"question":"If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:","choices":[{"text":"Force","value":"A"},{"text":"Energy","value":"B"},{"text":"work","value":"C"},{"text":"impulse","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":161559,"question":"Change in momentum is one second called.","choices":[{"text":"Impulse","value":"A"},{"text":"Force","value":"B"},{"text":"Energy","value":"C"},{"text":"Work","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":161558,"question":"The collision in which KE is conserved but momentum is not conserved is called:","choices":[{"text":"Elastic collision","value":"A"},{"text":"Inelastic collision","value":"B"},{"text":"any these","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":161557,"question":"When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.","choices":[{"text":"Becomes half","value":"A"},{"text":"Becomes zero","value":"B"},{"text":"Ramains same","value":"C"},{"text":"Becomes double","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":161556,"question":"If two bodies of equal masses moving in the same direction collide elastically, then their velocities.","choices":[{"text":"Are added","value":"A"},{"text":"Are subtracted","value":"B"},{"text":"Do not change","value":"C"},{"text":"Are exchanged","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":161555,"question":"Acceleration in a body is always produced in the directin of:","choices":[{"text":"Velocity","value":"A"},{"text":"Weight","value":"B"},{"text":"Force","value":"C"},{"text":"Botha B and C","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":161554,"question":"A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:","choices":[{"text":"20 minutes","value":"A"},{"text":"48 minutes","value":"B"},{"text":"10 minutes","value":"C"},{"text":"5 minutes","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":161552,"question":"The path followed by the projectile is known as:","choices":[{"text":"Cycle","value":"A"},{"text":"Hyperbola","value":"B"},{"text":"Trajectory","value":"C"},{"text":"Route","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":161551,"question":"During the upward motion of the projectile, the vertical component of velocity:","choices":[{"text":"Decreases","value":"A"},{"text":"Increases","value":"B"},{"text":"Remains constant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":161550,"question":"Change in momentum is one second is called:","choices":[{"text":"Impulse","value":"A"},{"text":"Force","value":"B"},{"text":"Energy","value":"C"},{"text":"Work","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":161549,"question":"Which quantity has the same dimension as that of impulse?","choices":[{"text":"KE","value":"A"},{"text":"Power","value":"B"},{"text":"Momentum","value":"C"},{"text":"Work","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":161548,"question":"The product of force and time is called change in:","choices":[{"text":"Momentum","value":"A"},{"text":"Impulse","value":"B"},{"text":"Force","value":"C"},{"text":"Both a and b","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":161547,"question":"Newton's first law is also called:","choices":[{"text":"Law of torque","value":"A"},{"text":"Law of force","value":"B"},{"text":"Law of inertia","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":161546,"question":"Acceleration in a body is always produced in the direction of :","choices":[{"text":"Velocity","value":"A"},{"text":"Weight","value":"B"},{"text":"Force","value":"C"},{"text":"Both B and C","value":"D"},{"value":"E"}],"correctAnswer":3}]