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Classical Mechanics MCQs

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1. What is the SI unit of acceleration?





2. A car travels 150 km in 3 hours. What is its average speed?





3. If an object is moving with constant velocity, its acceleration is:





4. Which of the following quantities is a scalar?





5. A projectile is launched with an initial velocity of 20 m/s at an angle of 45° to the horizontal. The horizontal component of its velocity is:





6. According to Newton’s First Law, an object at rest will stay at rest unless acted upon by a:





7. Newton’s Second Law of Motion can be represented by the formula:





8. The force required to accelerate a 5 kg object at 2 m/s² is:





9. In the absence of air resistance, all objects fall with the same:





10. The unit of force in the SI system is:





11. The work done by a force is zero if the displacement is:





12. The kinetic energy of a 2 kg mass moving with a speed of 3 m/s is:





13. Potential energy is given by the formula:





14. Which of the following is a form of mechanical energy?





15. The unit of work in the SI system is:





16. Momentum is defined as the product of:





17. The SI unit of momentum is:





18. A 4 kg object moving at 3 m/s collides with a 2 kg object moving at -4 m/s. What is the total momentum before collision?





19. In an elastic collision:





20. Impulse is the product of:





21. The centripetal force acting on an object moving in a circle is directed:





22. The time taken to complete one full revolution in a circular path is called:





23. The gravitational force between two masses is inversely proportional to the:





24. If the distance between two objects is doubled, the gravitational force between them becomes:





25. The value of the universal gravitational constant (G) is approximately:






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