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1. What idea did Galileo disprove with his experiment in inclined plane?
2. Differentiate contact and non-contact force and give 3 examples for each type of force.
3. What is inertia and how it is related to the mass of an object?
4. Is it correct to say that an object at rest has no force acting on it? If not, what would be the correct way of stating it?
5. A ball rolling on the floor slowly comes to a stop. Does it violate the law of inertia? Defend your answer.
6. Define equilibrium in terms of a) combination of forces (balanced or unbalanced), b) net force.
7. What can you say about the net force when there is an unbalanced forces acting on a body?
8. Can a moving object can still be in state of equilibrium? If yes, how do you describe the motion of the object?
9. Why is it important for the passengers inside a car to wear seatbelts. Explain your answer using Newton’s first law of motion.
10. Is the earth in the state of equilibrium? If yes, defend your answer. If no, describe what would be the motion of the earth.
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