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📘 SCIENCE
PHYSICS | Motion-F
📝 Questions: 50
⏱️ Timer: 20 min
Q1. In the hockey example, the positive direction is taken as:
Q2. A 0.5 kg ball moving at 10 m/s is caught by a fielder who pulls his hands back, taking 0.5 seconds to stop the ball. What is the average force exerted by the ball on the fielder's hands?
Q3. A 1500 kg car moving at 20 m/s applies brakes and comes to rest in 5 seconds. What is the braking force?
Q4. Two objects, one of mass 2 kg moving at 3 m/s and another of mass 4 kg moving at 2 m/s in the opposite direction, collide and stick together. What is their combined velocity?
Q5. A force of 20 N acts on a 4 kg object for 3 seconds. What is the change in momentum of the object?
Q6. Conservation laws such as momentum and energy are:
Q7. A conservation law can be:
Q8. A single experiment that disagrees with a conservation law can:
Q9. The law of conservation of momentum is:
Q10. Conservation of momentum applies when:
Q11. The first law of motion states that an object remains in motion unless:
Q12. The natural tendency of objects to resist change in motion is:
Q13. The measure of inertia is:
Q14. The SI unit of mass is:
Q15. Force of friction always:
Q16. Second law relates force to:
Q17. SI unit of force is:
Q18. Momentum equals:
Q19. Momentum has the same direction as:
Q20. Third law states that action and reaction:
Q21. Action and reaction act on:
Q22. In an isolated system, momentum:
Q23. A horse pulls a cart because:
Q24. A fireman finds it hard to hold a fast-flowing hose because of:
Q25. Recoil of a rifle occurs due to:
Q26. A rifle of mass 4 kg fires a 50 g bullet. This situation shows:
Q27. Two objects after collision move with new velocities because:
Q28. When carpet is beaten, dust comes out due to:
Q29. Luggage on a bus roof must be tied because:
Q30. A ball slows down on the ground because of:
Q31. An object with net zero force can still move at:
Q32. A truck rolling down a hill with constant acceleration obeys:
Q33. Force needed to stop a vehicle depends on:
Q34. Friction on a stone sliding on ice causes:
Q35. A cabinet moving at constant velocity under applied force implies:
Q36. In a train pulled by an engine, friction of track acts:
Q37. If engine force > friction force, train will:
Q38. Momentum of an object is:
Q39. When two objects move in opposite directions, total momentum is:
Q40. Opposite direction motion is represented using:
Q41. Law of conservation of momentum has:
Q42. Force of friction acts:
Q43. A net zero unbalanced force gives:
Q44. When two masses collide and stick together, the collision is:
Q45. When truck rolls downhill, its acceleration is:
Q46. Higher mass means:
Q47. A 1 kg stone thrown on ice slows due to:
Q48. The acceleration of a 7-tonne train pulled by 40,000 N depends on:
Q49. A hose ejecting water pushes fireman backward due to:
Q50. Momentum is measured in:
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